The Service Corps of Retired Executives collected the data below to see if their small business consulting work in New Orleans changed afteHurricane Katrina. Their results are summarized in this table. (Academy of Strategic Management Journal, Volume 7, Special Issue, 2008)Before KatrinaAfter KatrinaState the null and alternative hypotheses in words.Type of contactOnline Telephone29112223Face to Face7293463 → BIU AAI EX, EE 12ptDELLm25Paragraphaltctri

Data is given for business consulting work after Katrina. Here, we have to test whether the small…

Answered: The Service Corps of Retired Executives…

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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After a researcher states an alternative hypothesis, the null hypothesis would be stated in a way that makes the two hypotheses ________ and ________. assumed; independent equal; independent all-inclusive; mutually exclusive equal; robust
Find the Type II error given that the null hypothesis, H0, is: there are no more than 15% of structures in the county were built without permits.And, the alternative hypothesis, Ha, is: a building inspector claims that more than 15% of structures in the county were built without permits. Select the correct answer below: The building inspector concludes that more than 15% of the structures in the county were built without permits when, in fact, no more than 15% of the structures were built without permits. The building inspector concludes that more than 15% of the structures in the county were built without permits when, in fact, more than 15% of the structures were built without permits. The building inspector cannot conclude that more than 15% of the structures in the county were built without permits when, in fact, no more than 15% of the structures were built without permits. The building inspector cannot conclude that more than 15% of the structures in the county were…
The manager of a fleet of automobiles is testing two different brands of radial tires and assigns one tire of each brand at random to the two rear wheels of eight cars and runs the cars until the tires wear out. The data, in kilometers, follow. Perform a hypothesis test at 0.05 level of significance. What is the Null and Alternative Hypthesis? Define the problem. Brand 1: 36,925 45,300 36,240 32,100 37,210 48,360 38,200 33,500Brand 2: 34,318 42,280 35,500 31,950 38,015 47,800 37,810 33,215
A golf instructor claims that more than 70% of his students have improved their driving distance by at least 20 yards after viewing and applying the techniques described in his instructional video. If 138 out of 180 viewers say that their driving distance has improved by at least 20 yards, is the instructor's claim valid? Identify the null and alternative hypotheses for this scenario. Is the instructor's claim that "more than 70% of his students have improved their driving distance by at least 20 yards," valid? Your response should include your decision and conclusion in context of the scenario.
The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that 77% of all fatally injured automobile drivers were intoxicated. A random sample of 50 records of automobile driver fatalities in a certain county showed that 33 involved an intoxicated driver. Do these data indicate that the population proportion of driver fatalities related to alcohol is less than 77% in Kit Carson County? Use ? = 0.10. State the null hypothesis H0 and the alternate hypothesis H. np? nq? What is the value of the sample test statistic? (Round your answer to two decimal places.) Find the P-value of the test statistic. (Round your answer to four decimal places.) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level ?? Interpret your conclusion in the context of the application.
The principal of a middle school claims that test scores of the seventh-graders at his school vary less than the test scores of the seventh-graders at a neighboring school, which have variation described by Η = 14.7. Assuming that a hypothesis test to support this claim has been conducted and that the conclusion is to reject the null hypothesis, state the final conclusion using pure English words.
Which of the below-mentioned hypotheses is assumed to be true while we perform a hypothesis test?
A group of doctors is deciding whether or not to perform an operation. Suppose the null hypothesis, H0, is: the surgical procedure will go well. Which is the error with the greater consequence?
According to a restaurant owner, the percentage of kindergartners in the U.S. who say pancakes are their favorite food is less than 25%. Out of 200 randomly selected kindergartners who were surveyed, 45 said that pancakes are their favorite breakfast food. Using a complete test of hypothesis with a = 0.05 , is there enough evidence to support the claim of the restaurant owner? You may refer back to the previous problem for the steps required for a test of hypothesis.
A company manager wants to compare the satisfaction levels of his customers from two stores belonging to his company. According to his research, 249 out of 300 people are satisfied with shop A, and 348 out of 400 people are satisfied with shop B. Which of the following hypothesis states that there is a significant difference between customer satisfaction levels? H0 : P1 < P2, H1 : P1 ≥ P2 H0 : P1 ≥ P2, H1 : P1 < P2 H0 : P1 > P2, H1 : P1 < P2 H0 : P1 = P2, H1 : P1 ≠ P2 H0 : P1 ≠ P2, H1 : P1 < P2
The following are the hypotheses for a test of the claim that college graduation statue and cola preference are independent. H0: College graduation status and cola preference are independent. H1: College graduation status and cola preference are dependent. If the test statistic is χ2=0.579 and the critical value is χ2=5.991, what is your conclusion about the null hypothesis and about the claim? A. Fail to reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that college graduation status and cola preference are independent. B. Reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that college graduation status and cola preference are independent. C. Fail to reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that college graduation status and cola preference are independent. D. Reject the null hypothesis. There is sufficient…
: The Center for the Study of Violence wants to determine whether a conflict-resolution program in a particular high school alters aggressive behavior among its students. For 10 students, aggression was measured both before and after they participated in the conflict-resolution course. Students Before Participating After Participating 1 10 8 2 3 3 3 4 1 4 8 5 5 8 7 6 9 8 7 5 1 8 7 5 9 1 2 10 7 6 From performing a hypothesis test to determine if the aggression does not differ as a result of the participation in the program, what is the p-value?

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