Question

​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 138 adult​ males, the mean pulse rate is 69.9 bpm and the standard deviation is 11.5 bpm. Find the value of the test statistic. The value of the test statistic is nothing. ​(Round to two decimal places as​ needed.)

Answer 1

The claim will be the Null hypothesis in this case. We are given the data . The null hypothesis

The test statistic is

The critical value of t is 1.977. Since the calculated value of t<the critical value, we fail to reject the null hypotehsis and conclude that there is evidence to accept the claim.