Quiz 9

1.  To test H0: σ=2.5 versus H1: σ>2.5​, a random sample of size n=21 is obtained from a population that is known to be normally distributed.

​(a) If the sample standard deviation is determined to be s=2.7​, compute the test statistic.

​(b) If the researcher decides to test this hypothesis at the á=0.10 level of​ significance, use technology to determine the​ P-value.

​(c) Will the researcher reject the null​ hypothesis?

(a) The test statistic is

​(b) The​ P-value is

​(c) Since the​ P-value is ______ than the level of​ significance, the researcher _______ reject the null hypothesis  H0: σ=2.5.