A November 2018 Gallup Poll of 1075 U.S. adults found that 627 are satisfied with the total cost they pay for their health carem find margin of error for 95% ci for p.

Q: In October 2017, the Gallup Poll asked a sample of 10281028 U.S. adults, "Are you in favor of the…

A: Margin of error: It is the vary of values below and higher than the sample data point in a…

Q: In a sample of 550 students, 80% prefer online resources versus printed materials. The standard…

A:

Q: An entertainment company surveyed 360 elementary school children and found that 153 of them were…

A: There are 153 out of 360 (n) elementary school children found as above grade level readers. The…

Q: For a repeated-measures ANOVA, if SSwithin treatments = 86, SSbetween treatments = 80, SSbetween…

A: F-Ratio = MSbetween treatmentsError

Q: According to statistics reported on CNbC, a surprising number of motor vehicles are notcovered by…

A: Solution: a. Let X be the number of vehicles were not covered by insurance and n be the sample…

Q: The executives at Sandbachian, inc., having recently solved their widget crisis, have another…

A: Let ‘x’ be the no of defective manhole covers i.e x=40 and n=800 sample propotion (P)=x/n p=40/800…

Q: A recent survey of 537 California college students found that 481 had taken an online class in the…

A:

Q: Do teachers find their work rewarding and satisfying? An article reports the results of a survey of…

A: Let pelementary denotes the population proportion of all elementary school teachers who are…

Q: In order to estimate the population proportion with a high school education,  you need a minimum…

A: It is given that margin of error (E) is 0.07 and the confidence level is 0.95.Here,

Q: What percent of patients received pamidronate? What percent of patients experienced the occurrence…

A: Let us define some events A : patient receive pamidronate. B : patient experiences the occurrence of…

Q: Do you think that a margin of error greater than 5% is appropriate when conducting a research?

A: Margin of error helps to understand the confidence level of the research or survey. It is calculated…

Q: Can you think of an area where it might not be practical, for a variety of reasons, to sample 100%…

A: Given:- We can think of an area where it might be practical, for a variety of reasons ,to sample…

Q: a. Out of a random sample of 74 birds, how.many would you expect to live longer than 9 years? b.…

A: Let X = number of years a bird lives.  Then, X ~ Exponential (0.125) Thus,  f(x) = 0.125e-0.125x .

Q: In statistical analysis, the burden of proof lies traditionally with:

A: A test is said to be statistically significant if the null hypothesis is

Q: d. Glamour Magazine obtains sample data from readers who decide to mail in questionnaire printed in…

A: Introduction: It is required to identify the type of sampling used.

Q: If a study determines the difference in average salary for sub populations of people with blue eyes…

A: Given, As the study determines that the difference in average salary for sub-populations of people…

Q: Do teachers find their work rewarding and satisfying? An article reports the results of a survey of…

A: There are two independent samples which are elementary and high school. We have to construct 95%…

Q: During routine screening, a doctor notices that 20% of her adult patients show higher than normal…

A: Obtain the sample size of a preliminary estimate for p is 0.20 with the 95% confidence. The formula…

Q: Stacy conducts a study to look at the effects of season (fall, winter, spring, summer) and type of…

A: Two way ANOVA:   From the given information, the data view of the given variables is,     fall…

Q: Recently, 18.3% of visitors to the Travelocity website hailed from the Google search engine. A…

A: It is given that Sample size n = 130 Population proportion p = 18.3% = 0.183

Q: A poll of 80 students selected at random at Midtown University found that 20 were in favor of a fee…

A: Given  Total student in sample = 80 students No. of student in favour of feet hike = 20 students

Q: Do teachers find their work rewarding and satisfying? An article reports the results of a survey of…

A:

Q: Suppose 50% of all voters in a population support a politican, SHARE What is the zscore of sample…

A:

Q: intended population

A: A population is the entire group that you want to draw conclusions about   Intended population:…

Q: According to the Law of Large Numbers what effect will increasing the sample size have on the sample…

A: It is given that the sample size increases.

Q: In the study conducted by selecting 100 female and 100 male students in order to test the claim that…

A: given that  p- value=0.0228

Q: In a Harris poll of 500 human resource professionals, 230 said that body piercings and tattoos were…

A: Here, the confidence level or level of significance is not mentioned. In general, it would be…

Q: What is the name of the distribution on which the Tukey multiple-comparison method is based? What is…

A: Tukey multiple-comparison method: This method is useful for finding the confidence intervals for the…

Q: Blank are more representative of a population, but blank are easier to obtain

A: The sample is a set of units that is obtained from a population, which represents the population.…

Q: A political campaign manager wishes to survey a number of voters to estimate the proportion of those…

A:

Q: A Chinese cell-phone manufacturer exclusively uses robots in one of its factories. A random test run…

A:

Q: 1. How many samples must be considered from a population of 28,000 students, if 5% margin of error…

A:

Q: When a sampling technique introduces a considerable amount of bias, increasing the sample size will…

A: Given:- In a sampling technique, a considerable amount of bias is introduced.  Increasing the sample…

Q: Chebyshev's Theorem says that at least 95 percent of the data lie within 2 standard devlations of…

A: Chebyshev's theorem states that the proportion of observation is no less than 1-1k2 from the mean.…

Q: In order to study the mean blood pressure of people in his town, Richard samples the population by…

A: We know that stratified sampling involves dividing the population into groups and randomly selecting…

Q: State the one-way ANOVA identity, and interpret its meaning with regard to partitioning the total…

A: One-way ANOVA identity is given below: SST=SSTR+SSE

Q: Another pilot study During routine screening, a doctornotices that 22% of her adult patients show…

A: Computing the sample size: The confidence level is 98%. Therefore, α = 0.02 and α/2=0.01. The margin…

Q: A survey of 120 fatal accidents showed that in 24 cases the driver at fault was inadequately…

A: Point estimate:   The population parameter which is estimated by using sample statistic is termed as…

Q: A poll found that 83% of people out of a survey of size 127 watch at least three hours of TV per…

A: Given: A poll found that 83% of people out of a survey of size 127 watch at least three hours of TV…

Q: A poll is conducted and shows that 46% of homes have a landline, with a margin of error of 3%. a.…

A: Given that a poll is conducted and shows that 46% of homes have a landline with a margin of error of…

Q: By how many times does the sample size have to be increased to decrease the margin of error by a…

A: Formula for margin of error is ME = Zα/2 * σ / √n where Zα/2 = critical value

Q: Why might the range not be the best estimate of variablitiy?

A: Range is the difference between the largest and smallest value in a data set, so if there is an…

Q: A previous study showed that 69% of community college students have read a book for personal…

A: Given info: A previous study showed that 69% of community college students have read a book for…

Q: A researcher reports an F ratio = (5, 9), repeated-measures ANOVA, how many treatments were compared…

A: A researcher reports an F-ratio with df=5,9 from a repeated-measures ANOVA.  Let there are k…

Q: Why do we need to study the variation of a collection of data? Why isn't the average by itself…

A: Step 1: An important characteristic of a data set is the variation in the data. In many of the data…

Q: For a nuclear reduction plan, to compare the approval rate from people with college degrees and the…

A:

Q: A poll found that 71% of people out of a survey of size 130 watch at least three hours of TV per…

A: From the given information,   A poll found that 71% of people out of a survey of size 130 watch at…

Q: An auditor revlewed 25 oral surgery Insurance clalms from a particular surgical office, determining…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.