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Q: A new process in manufacturing fertilizers was designed to produce a mean of 880 tons per day. to…
A: Given Information: Hypothesized value of population mean μ=880 Sample size n=50 Sample mean x¯=871…
Q: A sample consists of the following n = 6 scores: -2, 7, 6, 4, 1, 3 What is the mean? M = 3.17 What…
A: Solution-: Given data: -2,7,6,4,3,1 We want to find (a) Mean (M)=? (b) The standard deviation (s)…
Q: 3. The following data shows the results of 4 students in a 50-item multiple choice exam: 47, 36, 42,…
A: Formula : range=maximum - minimum
Q: [ Let X₁,..., Xn and Y₁,..., Ym follow the location model X₁ = 0₁ +Z₁, i=1,..., n 02 + Zn+isi 1, Y₁…
A: * SOLUTION :-
Q: Do you think statistics is useful in business analysis? Discuss in not more than 150 words
A: Solution: Do you think statistics is useful in business analysis?
Q: 2 3 4 sorsa UHDE 5 6 10 7 2 5,1 6,4 3,6,2 4, 5, 1,0 11 12 2 13 7 where 712= 72 students What is the…
A: Solution-: We have following data: xi 15 57 72 81 85 94 96 102 103 106 110 111 114 115 122 137…
Q: In order to determine the public opinion for converting an industrial area into a public park a poll…
A: formula for the sample size needed to estimate a population proportion is
Q: 4. The mean weight of five complete computer stations is 167.2 pounds. The weights of four of the…
A: Formula : x̄=Σx/n
Q: A store claims that on the average they sell 800 pieces of candies. During the last five days, 785,…
A: Note: If the post contains multiple questions only allow to do first question as per guidelines of…
Q: b. A researcher wants to investigate whether people who have high sugar levels can benefit from a…
A: The question is about paired t test Given :
Q: A newsgroup is interested in constructing a 90% confidence interval for the propor Americans who are…
A: Given Sample size N=559 X=396
Q: Based on the following scores of X and Y, calculate the Pearson correlation. X Y 60 6 40…
A: To find: Pearson correlation coefficient
Q: 4. For each of the following functions, Find c so that the function is a PDF. a) (cx² + x) 10.11(x).…
A: Solution
Q: Out of 500 people sampled, 250 preferred Candidate A. Based on this, estimate what proportion of the…
A: Solution-: Given: n=500, X=250, c=0.99 We want to find 99% C.I. ........<p<........
Q: A fast food restaurant cashier claimed that the average amount spent by the customers for dinner is…
A: Given : sample size, n =50 sample mean, x̄ =130 population standard deviation,σ=7…
Q: Consider a population of size N = 6, 800 with a mean of μ = 165 and standard deviation of o = 28.…
A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…
Q: 3. Find a PDF of a random variable X whose CDF is given by Fx(x) = (1-e*)[0,00) (x).
A: Solution
Q: Provide the critical region, and t-value. 1. An educator claims that the average salary of…
A: given data : 600,560,600,550,700,550,600,850,900
Q: 1. What is the mathematical symbol to be used in stating the claim: The average grade of Grade 11…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: wVI AL - Compute the correlation coefficient of the following bivariate data. Then, give a…
A: According to our policy we can answer only first part for remaining please repost the question
Q: Ngan scored 1 standard deviation below the class average on a statistics exam. The class average was…
A:
Q: suppose a left-skewed distribution exists with a mean of 126 and standard deviation of random sample…
A: Given Mean=126 Standard deviation=11 Sample size=60
Q: Suppose Y is normally distributed with mean 5.4 and variance 1.69. Determine the following…
A: Given: Mean μ=5.4 Standard deviation σ=1.69=1.3
Q: i. With what degree of confidence can one deduce that the confidence limits of the actual proportion…
A: here given , sample size n = 5000 and sample proportion car having cameras = 10005000 = 0.2
Q: The sample size criteria for multinomials is that all expected group counts need to be at least 5.…
A: The objective is to find out whether the given statement is true or false.
Q: If the mean height of a full-grown Wookie is 83 inches with a standard deviation of 4 inches, what…
A: Mean=83 Standard deviation =4 Z score =? For x=88
Q: A random sample of 300 shoppers was selected to estimate the proportion of customers satisfied with…
A:
Q: A marketing research survey shows that approximately 80% of the car owners surveyed indicated that…
A: Hello. Since your question has multiple, we will solve first question for you. If you want remaining…
Q: The Department of Motor Vehicles office tried a new customer service system after people complained…
A: Positively skewed curve means the right end of the curve is more flatter. Otherwise,…
Q: A student organization at a university is interested in estimating the proportion of students in…
A:
Q: When conducting an ANOVA on sbp and genhelth, the p-value is 0.02. Therefore we conclude reject the…
A: Given that
Q: In 2016, National Geographic conducted a survey of 1203 college-age American adults who attended a…
A:
Q: A. critical value B. rejection region 10. What graphical model is appropriate A. bell shape B. test…
A: Please note that as per our guidelines if multiple questions are posted we can answer one question.…
Q: PROBLEM SET NUMBER 7: Measure of Variability for ungrouped data Find the Range, Variance, and…
A: Given 123,1211,133,45 n=4
Q: you are testing for a population II. When the population standard deviation is given III. When the…
A: The hypothesis testing is conducted using the following procedure
Q: Fifty patients with high lipoprotein and thirty patients with low lipoprotein were observed. None of…
A: Introduction: It is required to calculate the relative risk of developing ischemic stroke in eight…
Q: a store claims that on the average they sell 800 pieces of candies. during the last five days,…
A: The question is about hypo. testing of a popl .mean Given : No. of days ( n ) = 5 No. of sold pieces…
Q: The Precision Scientific Instrument Company manufactures thermometers that are supposed to give…
A: Let z be the standard normally distributed random variable with mean 0 and standard deviation 1
Q: To develop a testable hypothesis, a literature review is done to identify the variables then the…
A: Since you have asked multiple question ,we will slove the first question for you .If you want any…
Q: You take a random sample of 20 female toco toucans, and you find that they have an average body mass…
A: Given that Sample size n =20 Sample mean =546.47 Standard deviation =104.87
Q: (1) What are advantage and disadvantages of Apriori Algorithm (II) For the given below transaction…
A:
Q: rom the General Social Survey. A researcher wants to determine if health and happiness level are…
A: 1)Null and alternative hypothesis Ho : health and happiness have the same distribution H1: health…
Q: Here are some statements relating to a P-Value A. A P-Value is the probability of observing the test…
A: Solution P value is the probability calculated from test statistic .
Q: The average price of a personal computer is $949. If the computer distributed with a standard…
A:
Q: Let 1 1 f(x) = Ix-31, 1≤x≤ 5. 4 Deduce that the function above is a probability density function of…
A: Solution
Q: For ANOVA, the denominator of the F-ratio is called the Obetween groups total error treatment term.…
A: An Analysis of variance is performed.
Q: Do you think statistics is useful in business analysis? Discuss in not more than 150 words
A: Statistics in Business Analysis: Statistics plays a significant role in Business Analysis. To study…
Q: If data show that a particular exercise has a strong negative correlation with an individual's…
A: Given, If data that shown that a particular exercise has a strong negative correlation with an…
Q: c) If only 50 employees are needed to participate, how many should be taken from each department…
A: Given, Number of Employees = N= 1202 Sample size in proportional allocation= np=n*NpN…
Q: Suppose you want to predict the percentage of successful field goals a professional basketball…
A: 1. The provided information is x y xy x2 45 69 3105 2025 46 78 3588 2116 70 68 4760 4900…
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- construct anova and show all calculation manually, thanksThe Family and Medical Leave Act provides job protection and unpaid time off for full time employees in the U.S. from work for a serious illness or birth of a child. In 2000, 60% of the respondents of a survey stated that it was easy to get time off for these circumstances. A researcher wishes to see if the percentage who said it was easy to get time off has changed. A sample of 100 people who used the leave showed that 53% found it easy to get the leave.The mean age of four pupils, on the date of a TMC Regional Final they had been entered for, was 14 years 2 months. Their teacher realized that this date clashed with the school holidays and changed their entry to take place exactly two months later. Unfortunately, this meant that one of the pupils could no longer participate and a younger replacement was found. The mean age of the revised team of four pupils, on the new entry date, was 13 years 11 months. How many months older is the original entrant than the younger replacement?
- According to the National Climatic Data Center, San Juan, Puerto Rico, experienced127 days of measurable precipitation(rain) in 1995. This was more days of rain themany of the other weather station reported that year, but it was not considered unusualfor San Juan. By comparison, the situation at Phoenix Arizona, reported 31 days ofprecipitation during the same year (again, not unusual).i. Suppose you were taking a one-day business trip to San Juan. What is theprobability that it will rain while you are there?ii. Suppose you decide instead to take your trip to Phoenix. What is theprobability that measurable precipitations will occur while you are there?According to the Department of Motor Vehicles (DMV), the entity in chargeof providing driving licenses in the United States, it is illegal to drive with a blood alcohol content of 0.08% or more if you are 21 or older. In the DMV’s guidelines to determine when a person is driving under the influence, which can befound at https://www.dmv.ca.gov/portal/dmv/detail/pubs/hdbk/actions_drink, it is indicated that fewer than five percent of the population weighing 100 pounds will exceed the 0.33 alcohol level. Assume this is accurate. If the Highway Patrol stops in a random day 200 unrelated cars where the individual weighs one hundred pounds, on a Friday night, what is the probability that six percent of more individuals stopped exceeds that 0.33 alcohol level?Among 13, 963, 753 males, there were 20, 734 cases of prostate cancer. Amon 14, 272 females, there were 19,107 cases of female breast cancer. Calculate risk ratio of males prostate cancer to breast cancer among females.
- If the probablitiy of being hit by lightning is 1/100,000, what is the probablitiy of not getting hit by lightning?It is believed that from among senior high school students, 15% would like to pursue engineering course. Suppose a random survey reveals that 85 out of 600 students choose engineering course, would you say that the percentage of those who would pursue engineering course is less than 15%? Use 0.05 level of significance.A bank auditor used a random sample of 100 accounts and found out that the average demand deposit balance was shs 549.82 if the auditor needs a point estimate for the population mean foe all accounts at this bank what would she use.
- Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 682randomly selected adults showed that 55% of them would erase all of their personal information online if they could. Find the value of the test statistic.What is the most common method to pay a gas bill? An independent commission checked a random sample of 500 consumers in a region of the UK and found that 200 people paid online using a monthly direct debit, 160 paid online in response to receiving a bill, and the remainder paid by other offline methods (e.g. by sending a cheque, using an official pay point, over the telephone etc). a) Estimate the proportion of people in the UK population who pay their gas bill using an offline method. Construct a 90% confidence interval for your estimate. b) Estimatetheproportionofpeoplewhopaybymonthlydirectdebit.Constructa95% confidence interval for your estimate.A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting transactions with their bank. Let’s assume that 0.18 is the true proportion (in 2016) of all cell phone owners who use their cell phone for banking. (a) You take a random sample of 150 current cell phone owners and find that 38 of them use their cell phone for banking. Is this convincing evidence that since 2016 there has been an increase from 0.18 in the proportion of cell phone owners who use their cell phone for banking? Use = 0.05. (b) Suppose the question you asked the people in your sample was, “People on the go use their cell phone for everything. Do you ever use yours to conduct your banking business?” Comment on the potential bias arising from the way this question was asked and its’ impact on your conclusion.
