Answer in Statistics and Probability for Millicent #250759
October 24th, 2022
If you want to carry out a statistical test at α = 0.01. to test whether the population mean is equal to 500 or not, using a sample size of 300, with a test statistic of z = 1.97, your conclusion should be_____.Select one:
a. do not reject the null hypothesis
b. reject the null hypothesis
c. only reject when the test statistic is negative
d. not enough information to determine
Test statistic value“=z=1.97”
p-value at “alpha=0.01” for two-tailed test using z-score table is “(pm2.58)”
Since, 1.97 lies in this interval, we cannot reject null hypothesis.
Thus, option (a) is correct, i.e., do not reject the null hypothesis.