Hypothesis Testing for VarianceA store owner claims that the variance of profit in his store is greater than 30,000. The results are shown below. Atthe level of significance, is there enough evidence to support her claim?561987575513915581990759961597542853622507606635Use the Variance tab to complete the test.Begin by entering the data starting with J2 to get the sample variance and sample size n.Use those values to complete the C6 to C8.For C4, change the direction of the arrow to reflect the claim.Finish by entering the claim value in D418Results:19.20Is there enough evidence to support his claim? Give your answer in complete sentences. Justify your answer eitherby using a rejection region or a p-value argument.212223242526

Given information: 561 987 575 513 915 581 990 759 961 597 542 853 622 507 606 635

Answered: Hypothesis Testing for Variance A store…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Waiting times (in minutes) of customers in a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the mean and median for each of the two samples, then compare the two sets of results. Single Line 6.5 6.6 6.7 6.8 7.0 7.1 7.4 7.8 7.8 7.8 Individual Lines 4.2 5.5 5.8 6.1 6.3 7.8 7.8 8.5 9.4 10.1 The mean waiting time for customers in a single line is nothing minutes. The median waiting time for customers in a single line is nothing minutes. The mean waiting time for customers in individual lines is nothing minutes. The median waiting time for customers in individual lines is nothing minutes. Determine whether there is a difference between the two data sets that is not apparent from a comparison of the measures of center. If so, what is it?
Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores: Grades 73.5 63.9 64.3 85.5 62.7 69 88 63.9 65 64.3 Test grades are believed to be normally distributed.Use a significance level of 5%.
state your interval, supporting work and conclusion: the daily salaries of substitute teachers for local school districts is shown below. find the 99.9% confidence interval of the mean salaries of all substitute teachers.
BESTION 12 the study description below to answer the following questions. A research group is interested in the relationship between alcohol consumption and heart disease in American men over the age of 40 years old. The researchers randomly selected 1913 medical records of men who suffer from heart disease. The researchers reco did not drink, drank moderately, or drank heavily. They found that men who had heart disease tended to drink heavily. Identify the population for the study. Identify the sample for the study. or the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). C Paragraph Arial 10pt T V 10 1 T == al || 15 15 №² Y
P value
Because variance divided by the sample size gives you the estimated standard error, as the sample size ______, the estimated standard error will ______. a. increases ; decrease b. decreases ; decrease c. increases ; increase d. decreases ; increase
Sample grade point averages for ten male students and ten female students are listed. Find the coefficient of variation for each of the two data sets. Then compare the results. Males 2.3 3.8 3.9 3.7 2.6 2.4 3.6 3.2 3.9 1.8 Females 2.7 3.6 2.2 3.9 3.7 4.2 1.9 3.9 3.6 2.1 ... The coefficient of variation for males is %. (Round to one decimal place as needed.) The coefficient of variation for females is %. (Round to one decimal place as needed.) Compare the variability of grade point averages of males and females. Choose the correct answer below. O A. The grade point averages of females and males have the same variation. O B. The grade point averages of males are more variable than females. O C. The grade point averages of females and males do not vary. O D. The grade point averages of females are more variable than males.
Students at the University of Michigan frequently talk about the freshly baked chocolate chip cookies from MoJo. A UM student wishes to investigate some questions specifically about the chocolate chip cookies at MoJo, but needs the help of a Stats 250 student. For each description of a research question below, select the one corresponding statistical analysis technique most appropriate for addressing that research question.
Statistics students believe that the mean score on the first statistics test is 65. A statistics instructor thinks the mean score is higher than 65. He samples ten statistics students and obtains the scores 65; 65; 70; 67; 66; 63; 63; 68; 72; 71. He performs a hypothesis test using a 5% level of significance. The data are assumed to be from a normal distribution.
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