Question

in a sample of n = 30 selected from a normal population, X=57 and S=20, what is your statistical decision if the level of significance, a, is 0.10, the null hypothesis, Hois - 50, and the alternative hypothesis, Hy is 750? Click here to view page 1 of the table of the critical values of Click here to view page 2 of the table of the critical values of Determine the critical value(s) The critical value(s) is (are) (Round to four decimal places as needed. Use a comma to separate answers as needed) Determine the test statistic, ISTAT ISTAT-O (Round to four decimal places as needed) State your statistical decision. Choose the correct answer below = 50 O A. The test does not reject the null hypothesis. The data does not provide sufficient evidence to conclude that the mean differs from OB. The test does not reject the null hypothesis. The data provide sufficient evidence to conclude that the mean differs from p=50 O C. The test rejects the null hypothesis. The data provide sufficient evidence to conclude that the mean differs from 50 OD. The test rejects the null hypothesis. The data does not provide sufficient evidence to conclude that the mean differs from 50 ols Click to select your answer(s) This course 2001 T based on Levine to search

Answer 1

n=30

Degree of freedom =n-1=30-1=29

Significance(alpha=0.10)

First Part:

Critical value(t_a/2)=(-1.6991, 1.6991)

Second part:

X - Test Statistic(t) = – 57 - 50 s/ n 20/20 = 1.9170

Third part:

Ans: C.)