Question

​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 127 adult​ males, the mean pulse rate is 67.9 bpm and the standard deviation is 10.6 bpm. Find the value of the test statistic.

The value of the test statistic is ___________ (round to two decimal places)

Answer 1

Solution :

= 69

= 67.9

= 10.6

n = 127

Test statistic = z

= ( - ) / / n

= (67.9 - 69) / 10.6 / 127 = -1.17

The value of the test statistic is -1.17