(a) What are the null hypothesis H, and the alternative hypothesis H, that themanagers should use for the test?Ho:H: 0(b) What is the probability that the managers commit a Type I error? Round yourresponse to two or more decimal places.(c) Assuming that the actual value of u is 41.2 minutes, what is the probability thatthe managers reject the null hypothesis? Round your response to two or moredecimal places.(d) Suppose that the managers decide to perform another statistical test using thesame population, the same null and alternative hypotheses, and the same samplesize, but for this second test the managers use a significance level of 0.1 insteadof a significance level of 0.01. Assuming that the actual value of u is 41.2 minutes,how does the probability that the managers commit a Type II error in this secondtest compare to the probability that the managers commit a Type II error in theoriginal test?O The probability of committing a Type II error in the second test is greaterO The probability of committing a Type II error in the second test is lessOThe probabilities of committing a Type II error are equal Managers at an automobile manufacturing plant would like to examine the mean completion time u for an assembly line operation. The past data indicate thatEspañolthe mean completion time is 40 minutes, but the managers have good reason to believe that this value has increased. The managers plan to perform astatistical test of the claim and choose a random sample of 75 completion times in preparation for this test.Suppose that the population of completion times for the assembly line operation has a standard deviation of 3 minutes and that the managers perform theirhypothesis test using the 0.01 level of significance.Based on this information, answer the questions below. Carry your intermediate computations to four or more decimal places, and round your responses asindicated.(If necessary, consult a list of formulas.)

Dear students as per the guidelines we solve only first three subparts only multiple parts are…

Answered: (a) What are the null hypothesis H, and…

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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A personality test has a subsection designed to assess the "honesty" of the test-taker. Suppose that you're interested in the mean score, 4, on this subsection among the general population. You decide that you'll use the mean of a random sample of scores on this subsection to estimate L. What is the minimum sample size needed in order for you to be 90% confident that your estimate is within 5 of u? Use the value 21 for the population standard deviation of scores on this subsection. Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.) ?
I am using a study test to practice for an upcoming exam, and this is one of the questions I really don't understand. If you could possibly walk through this problem as simply as possible while describing every step and why it is being done, I would really appreciate it!
When H0 is true in a t test with significance level 0.05 the probability that the p-value falls <= 0.05
A personality test has a subsection designed to assess the "honesty" of the test-taker. Suppose that you're interested in the mean score, µ, on this subsection among the general population. You decide that you'll use the mean of a random sample of scores on this subsection to estimate u. What is the minimum sample size needed in order for you to be 90% confident that your estimate is within 3 of u? Use the value 23 for the population standard deviation of scores on this subsection. Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.)
Please solve (a) & (b) only! Thanks.
A personality test has a subsection designed to assess the "honesty" of the test-taker. Suppose that you're interested in the mean score, μ, on this subsection among the general population. You decide that you'll use the mean of a random sample of scores on this subsection to estimate μ. What is the minimum sample size needed in order for you to be 90% confident that your estimate is within 3 of μ? Use the value 23 for the population standard deviation of scores on this subsection. Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
18. With respect to the chi-square test, a p value of 0.034 means there is a 3.4% probability that the deviation of the observed value from the expected value is due to chance and a 96.6% probability that this is not due to chance. True False
We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 522. So, we choose a random sample of exam scores. The sample has a mean of 503 and a standard deviation of 76 For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. The sample has size 13,and it is from a normally distributed population with an unknown standard deviation. z= t= =z
14
“Type I Error Blues,” by David Stein The managers huddled to see if they had won or lost. Did the new process from 2 months before yield data showing a reduction in cost? Or was it merely a matter of chance… Too soon to do the data dance? So they set about the business of crafting a hypothesis test In order to conclude which process was best. With the null hypothesis meaning “status quo”, no change evident They quickly concluded H0 could not stand, as was their true intent. Just one month later, they realized their grave mistake! A Type II error would have been so much safer, for goodness sake. Alas, their final huddle was a sad one with HR Director Bob. He told them to go back to training school as each was now in need of a new job. What was the likely managerial mood and outcome on the days immediately following the (erroneous) conclusion to reject this null hypothesis? What would have been the likely managerial mood and outcome on the days immediately following an…
2
A personality test has a subsection designed to assess the "honesty" of the test-taker. Suppose that you're interested in the mean score, μ, on this subsection among the general population. You decide that you'll use the mean of a random sample of scores on this subsection to estimate H. What is the minimum sample size needed in order for you to be 99% confident that your estimate is within 5 of u? Use the value 23 for the population standard deviation of scores on this subsection. Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.) Continue 2 3 X S $ 4 O % 5 6 & 7 Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center 8 9 ) Submit Assignment Accessibility 0 ? OO

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