1. WeBWork 5-2: Problem 12Previous Problem Problem List Next Problem(1 point) The effectiveness of a new bug repellent is tested on 13 subjects for a 10 hour period. Based on the numberand location of the bug bites, the average percentage of exposed skin protected from bites was calculated as 94% witha standard deviation of 11%. Assume that the population is normally distributed and consider the new repellent effectiveif it provides a percent protection of more than 90%. Using a = 0.01, conduct an hypothesis test with null hypothesisu<0.9 and alternative hypothesis u > 0.9 to determine whether the mean protection of the new bug repellent isgreater than 90% by computing the following.a) The number of degrees of freedom is: dfb) The critical value is: t,c) The test statistic is: tustd) The final conclusion is:O A. we reject the null hypothesis that j =0.9. Our results indicate that the new bug repellent is effective.CO B. we fail to reject the null hypothesis that a = 0.9. Our results do not provide enough evidence that the new bugrepellent is effective. WeBWork 5-2: Problem 13Previous Problem Problem ListNext Problem(1 point) Test the claim that for the population of statistics final exams, the mean score is u = 79 using the alternativehypothesis that u # 79. Sample statistics include n = 28, z = 81, and s = 12. Use a significance level ofa = 0.05 and assume a normally distributed population.a) The test statistic is:b) The positive critical value is:c) The conclusion is:O A. there is sufficient evidence to reject the claim that the mean score is equal to 79.B. there is not sufficient evidence to reject the claim that the mean score is equal to 79.

A Null Hypothesis refers to a concept that evaluates that there is no difference between a certain…

oblem List Next Problem s of a new bug repellent is tested on 13 subjec tes, the average percentage of exposed skin p %. Assume that the population is normally dis otection of more than 90%, Using a = 0.01, c

oblem List Next Problem s of a new bug repellent is tested on 13 subjec tes, the average percentage of exposed skin p %. Assume that the population is normally dis otection of more than 90%, Using a = 0.01, c

FINANCIAL ACCOUNTING

10th Edition

ISBN:9781259964947

Author:Libby

Publisher:Libby

Chapter1: Financial Statements And Business Decisions

Section: Chapter Questions

Problem 1Q

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