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The following are auditor judgments and attributes samplingresults for six populations. Assume large population sizes.1 2 3 4 5 6EPER (in percent) 2 1 1 0 3 8TER (in percent) 6 5 20 3 8 15ARO (in percent) 5 5 10 5 10 10Actual sample size 100 100 20 100 60 60Actual number of exceptions in the sample 2 4 1 0 1 8a. For each population, did the auditor select a smaller sample size than is indicatedby using the attributes sampling tables in Table 15-8 for determining sample size?Evaluate selecting either a larger or smaller size than those determined in the tables.b. Calculate the SER and CUER for each population.c. For which of the six populations should the sample results be consideredunacceptable? What options are available to the auditor?d. Why is analysis of the exceptions necessary even when the populations areconsidered acceptable?e. For the following terms, identify which is an audit decision, a nonstatistical estimatemade by the auditor, a sample result, and a statistical…

An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Step 1 of 2 :  Suppose a sample of 1313 new car buyers is drawn. Of those sampled, 341 preferred foreign over domestic cars. Using the data, estimate the proportion of new car buyers who prefer foreign cars. Enter your answer as a fraction or a decimal number rounded to three decimal places.

A study was done in 1998 by Dr. Benjamin Levine to explore the role of altitude training in athletic performance. First, he trained athletes at low altitude, then measured their finish times in a 5 kilometer run. Then the athletes were placed into one of the following groups: I, living and training at high altitude; Il, living at high altitude and training at low; or Ill, living and training at low altitude. The athletes were then retested in another low-altitude 5 K race. In this study, what are the control and experimental data? What are the dependent and independent variables? The results are expressed as average change in speed of each group. I: -3.4 sec., Il: +13.4 sec., Ill: -26.7 sec. a. Graph and interpret the results. b. Did the results surprise you? Why or why not? c. Explain why the three groups obtained the results presented? d.How did altitude affect blood composition and why? e.How would athletes' performance be affected if they live, train, and compete at different…

the college of science surveys its graduating students to determine the starting salaries and the job market for the new graduates. the population of graduating students according to majors is recorded as follows: BS bio (85), BSM-CS (102), BSM-BA (78), and BSM-AS(75). If you would like to select 100 samples, how large must a sample be for each major using proportionate allocation?

Question: In two large populations, there are 30 and 25 per cent respectively of blue-eyed people. Is this difference likely to be hidden in samples of 1,200 and 900 respectively from the two populations ?

States (and provinces) that have control over taxation sometimes reduce taxes in an attempt to spur economic growth. Suppose that you are hired by a state to estimate the effect of corporate tax rates on, say, the growth in per capita gross state product (GSP).(i) What kind of data would you need to collect to undertake a statistical analysis?(ii) Is it feasible to do a controlled experiment? What would be required?(iii) Is a correlation analysis between GSP growth and tax rates likely to be convincing? Explain.

A group of health professionals produced a cholesterol drug. To measure the effectiveness of this drug they implemented a program that offered free drugs to people to decrease their cholesterol level. Health professionals also collected a sample of people, who did not have the drug, to act as a control group. Health professionals then measured cholesterol level of all individuals in year 1, before any cholesterol drug were given out, and then measured the same group of individuals again in year 2 after the cholesterol drugs had been administered. Consider the following model to evaluate the effectiveness of the drug on people's cholesterol level: cholie = Bo + 8od2, + B1drugit + Vịt chol= cholestrol of individual i, in year t d2;= binary variable equal to 1 if the time period is year 2, and 0 otherwise drug= binary variable equal to 1 if individual i took the drug in year t, and 0 otherwise V= composite error consisting of the unobserved, time-constant effect (a;) and the idiosyncratic…

What sampling technique is used?   In a research class of 40 students, the teacher divides the class into five groups, each with eight members per group. The teacher then asked the class to choose their group members based on interests, compatibility, and rapport. After the selection was made, the teacher realized that the abilities per group were uneven. He then reshuffled some members of the group to achieve equilibrium among the groups. The teacher needs ten students to represent each group. He selected one male and one female from each group based on academic performance, leadership skills, and social skills as qualities that will embody as representatives per group.

Allegiant Airlines is considering an overbooking policy for one of its flights. The airplane has 50 seats, but Allegiant is considering accepting more reservations than seats because sometimes passengers do not show up for their flights, resulting in empty seats. The PassengerAppearance worksheet in the file Overbooking contains data on 1,000 passengers showing whether or not they showed up for their respective flights. In addition, Allegiant has conducted a field experiment to gauge the demand for reservations for the current flight. During this experiment, they did not limit the number of reservations for the flight to observe the uncensored demand. The following table summarizes the result of the field experiment. No. of Reservations Demanded Probability 48 0.05 49 0.05 50 0.15 51 0.30 52 0.25 53 0.10 54 0.10 Suppose Allegiant receives a marginal profit of $108 for each passenger who books a reservation (regardless of whether they show up). In addition, suppose…

five-star restaurant has the business objective of improving customer waiting time during the noon-to-1 p.m. lunch period. The manager decides to compare the waiting time between the restaurant's two locations. A random sample of 15 customers was selected from Location 1, and another random sample of 15 customers was selected from location 2 on the same day. The waiting times collected from both samples are stored in the following table.   Location 1 Location 2 4.21 9.66 5.55 5.90 3.02 8.02 5.13 5.79 4.77 8.73 2.34 8.01 3.54 8.35 3.20 10.49 4.50 6.68 6.10 5.64 0.38 4.08 5.12 6.17 6.46 9.91 6.19 5.47 3.79 3.82   At a 0.05 level of significance, is there evidence of a difference in the means waiting time between the two locations? Determine the p-value in (a) and interpret its meaning. What assumption about the population distribution of each location is necessary for (a)? Is the…

A sampling technique used to determine error rates in populations is: а. PPS sampling. b. Variables sampling. C. Cluster sampling. d. Attribute sampling.

7. A television station wishes to study the relationship between viewership of its 11 p.m. news program and viewer age (18 years or less, 19 to 35, 36 to 54, 55 or older). A sample of 250 television viewers in each age group is randomly selected, and the number who watch the station’s 11 p.m. news is found for each sample. The results are given in the table below.

A study conducted at Virginia Commonwealth University in Richmond indicates that many older individuals can shed insomnia through psychological training. A total of 63 insomnia sufferers averaging age 67 years old completed eight weekly sessions of cognitive-behavior therapy. After the therapy, 31 participants enjoyed a substantially better night's sleep. Calculate the sample proportion of insomnia sufferers who did not enjoy a better night's sleep after the therapy. Round your answer to three decimal places, if necessary.

Identify the appropriate test to use for the following scenarios: The population of American adults watch 238 minutes of TV per day on average. I believe that providing adults with bicycles will decrease the daily TV-watching. I provide bicycles to 500 American adults and then measure their daily TV watching. The sample watched 204 minutes of TV per day on average. Did the bicycles decrease TV watching? Group of answer choices A)One-Sample T-Test B) Independent Groups T-Test C)Correlated Groups T-Test D) Linear Regression

The manager of a men’s clothing catalog measured the market’s response to a $6 decrease in the usual price of his company’s oxford shirts by conducting a sales experiment.  An A-B split was used to divide the company’s 120,000-customer mailing list into two groups.  Customers in the control group were sent catalogs listing oxford shirts at their usual price of $40.  Customers in the test group were sent catalogs listing the price of oxford shirts at $32.80.  During the period of the test, customers in the control group purchased 700 oxford shirts, and customers in the test group purchased 889 oxford shirts. What is the independent variable in this sales experiment?  What is the dependent variable in this sales experiment? What is the percent change in price in this experiment?   What is price elasticity indicated by the results of this experiment.

Which of the following measures of central tendency can have more than one value in a single sample? Mode Median Variance Mean

Problem is given: Out of a total number of 10,000 candidates who applied for jobs in a government department, 6,854 were males, 3,146 were graduates and others, non-graduates. The number of candidates with some experience was 2,623 of whom 1,860 were males. The number of male graduates was 2,012. The number of graduates with experience was 1,093 that includes 323 females?

Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.

Select the scenario which is an example of voluntary sampling. Answer Keypad Keyboard Shortcuts Tables An administrator wants to determine the average amount of time that schoolchildren spend outdoors on a daily basis during the summer holidays. He selects a random sample of students and polls their parents via email. O A radio show features a local singer's new album. The radio show host asks his listeners to send their feedback via text messages. O A fashion student decided to study how popular blue jeans are among young people. She went to a local college campus and calculated the proportion of students wearing blue jeans. A charity organization has 1000 donors that are members of the Democratic party and 1000 donors that are members of the Republican party. They want to estimate O the average donation, so they select 50 donors that are members of the Democratic party and 50 donors that are members of the Republican party and ask about the donation they are planning to make.

Researchers conducted a prospective cohort study to assess the association between dietary supplements and cognitive ability among children. A total of 500 children age 12-17 years who take an omega-3 fatty acid supplement are compared with 500 children age 12-17 years who do not take an omega-3 fatty acid supplement. Researchers follow the children for 2 years. During this time, 300 children who take the supplement earn what is classified as a “high” score on a cognitive test while 200 children who do not take the supplement earn what is classified as a “high” score on the same cognitive test.  Show calculations.    a) Construct a 2x2 table from the information presented above b) The risk difference is:

We are interested in analysing the effect of the lockout laws introduced in some areas of the Sydney CBD and nearby surrounds on the number of alcohol-related violent incidents.  Suppose we have two samples of data on the number of violent incidents in a number of local areas of the Sydney CBD and nearby surrounds. Pubs, hotels and clubs located in a subset of these areas became subject to the lockout laws when they were introduced in 2014. The first sample is from 2010 before the introduction of the lockout laws, and the second is from 2015 after the introduction of the law. The hypothesis we wish to test is that the introduction of the lockout laws reduces violent incidents in the areas in which the lockout laws were put in place.  We use a difference-in-difference model on the pooled data from 2010 and 2015. We find the following results: viol_inc hat = 33.21 (5.29) + 12.43lockout (7.01) – 4.19Yr2015 (2.98) – 3.32 (lockout x Yr2015) (1.85) N = 181, R^2 = 0.128 Where: viol_incis the…

E. coli cells were infected with two strains of T4 virus. One strain is minute (m), rapid lysis (r), and turbid (t); the other is wild type for all three markers. The lytic products of this infection were plated and classified. The resulting 10,342 plaques were distributed among eight genotypes as follows:a. What are the linkage distances between m and r, between r and t, and between m and t. b. Determine the linkage order for the three genes. c. What is the coefficient of coincidence (see Chapter 4) in this cross? What does it signify?

A statistics teacher wants to see if there is any difference in the performance of students on the final exam if she gives them orange jelly beans before the exam. She has a theory that orange jelly beans will change the results, but she isn't sure in which direction. She knows that the population mean score on the exam when students do not have orange jelly beans is 85 and that exam scores have an approximately symmetric distribution. She gives orange jelly beans to 25 randomly selected students and finds that these students had a sample mean score of 88 with a sample standard deviation of 5. She wants to have 99% confidence in her result.

the unemployment rate for 18- to 34-year-olds was reported to be 10.8% (the Cincinnati Enquirer, november 6, 2012). assume that this report was based on a random sample of four hundred 18- to 34-year-olds. a. a political campaign manager wants to know if the sample results can be used to conclude that the unemployment rate for 18- to 34-years-olds is significantly higher than the unemployment rate for all adults. according to the bureau of labor Statistics, the unemployment rate for all adults was 7.9%. develop a hypothesis test that can be used to see if the conclusion that the unemployment rate is higher for 18- to 34-year-olds can be supported.b. use the sample data collected for the 18- to 34-year-olds to compute the p-value for the hypothesis test in part (a). using a 5 .05, what is your conclusion?c. explain to the campaign manager what can be said about the observed level of significance for the hypothesis testing results using the p-value

The "Freshman 15" refers to the belief that college students gain 15 lb (or 6.8 kg) during their freshman year. Listed in the accompanying table are weights (kg) of randomly selected male college freshmen. The weights were measured in September and later in April. Use the listed paired sample data, and assume that the samples are simple random samples and that the differences have a distribution that is approximately normal. Complete parts (a) through (c). C Ho: Hd = 0 kg H₁: Hd> 0 kg (Type integers or decimals. Do not round.) Identify the test statistic. t = 1.32 (Round to two decimal places as needed.) Identify the P-value. P-value = 0.112 (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? September April 51 71 58 81 73 64 64 68 54 54 77 56 82 75 68 60 68 56 a. Use a 0.01 significance level to test the claim that for the population f freshman male college students, the weights in September are less than the weights in the following April.…

In June 2015, Gallup conducted a poll of a random sample of 14802 adults to determine the well-being of people living in the United States. One question asked, "Did you exercise at least 30 minutes for 3 or more days in the past week?" In the survey, 57.3% of males and 42.7% of females responded yes to this question. Which of the following is true about this scenario?A. 57:3% and 42.7% are both statistiesB. 57.3% and 42.7% are both parameter.C. If we took another random sample of 14802 adults, we would expect to get the exact same results.

15 To perform a test of hypothesis that the population slope parameter is zero, the test statistic t is ______. a 14.487                 b 16.097                 c 17.885                 d 19.873

The sample means, x¯ , is an example of ...   Group of answer choices     an interval estimate   a population parameter   a point estimate   a population statistic

As the Country Director of a multi-national company in Ghana, you have decided to conduct a survey to determine the perception of Ghanaians about a new alcoholic beverage you have introduced into the market. Identify, justify your choice, and explain any three (3) sampling techniques that can be employed for such a survey. Discuss how you will use each technique to select sampling elements for the study. Clearly explain how you will collect the data.

Which of the following is a reason for using independently pooled cross sections? a. To increase the sample size b. To select a sample based on the dependent variable c. To select a sample based on the independent variable d. To obtain data on different cross sectional units