A sport trainer wants to know whether the true average time of his athlete who do 100 - metersprint is 98 seconds. He recorded 18 trials of his team and found that the average time is 98.2seconds with a standard deviation of 0.4 second. Is there sufficient evidence to reject the nullhypothesis if µ = 98 seconds at the 0.05 level of significance?A. Test statistic t = 2.1213 is a value greater than the critical value t, = + 2.110. Hence, the testvalue is clearly in the critical region. Thus, we decide to reject the null hypothesis.B. Test statistic tvalue is clearly outside the critical region. Thus, we decide to reject the null hypothesis.C. Test statistic t = 2.1213 is a value greater than the critical value ta = + 2.110. Hence, the testvalue is clearly in the critical region. Thus, we decide to accept the null hypothesis.D. Test statistic t = - 2.1213 is a value lesser than the critical value t = + 2.110. Hence, the testvalue is clearly outside the critical region. Thus, we decide to accept the nuill hypothesis.2.%3D%3D- 2.1213 is a value lesser than the critical value t, = + 2.110. Hence, the test

here given, sample mean = 98.2 n =18 sample standard deviation = 0.4 second significance level =…

Answered: 2. A sport trainer wants to know…

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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You want to test the speed of your internet connection. You will test the claim that your average speed is greater than 4.3 Mb/s. You collect data 39 different times, and among that sample, the average speed is 4.9 Mb/s. Assume internet speeds are normally distributed with a standard deviation of 1.1 Mb/s.a. State the null and alternative hypothesis for the claim that your average speed is greater than 4.3 Mb/s. Ho: ? ___4.3 Ha: ? ___ 4.3 Please explain to me how you determine the sign that goes into the blank space. b. The (null or alternative) hypothesis is the claim c. The goal of the test is to (support or reject) the claim.
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