Question

​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 171 adult​ males, the mean pulse rate is 67.6 bpm and the standard deviation is 11.1 bpm. Find the value of the test statistic.

Answer 1

Answer:

-1.649313114

Step-by-step explanation:

Sample size, n=171

Sample mean, x=67.6

Standard deviation, s=11.1

Study claims mean pulse $\mu=69$

Null hypothesis

$H_0: \mu=69$

$H_a: \mu \neq 69$

Test statistic is given by

$t=\frac {x-\mu}{\frac {s}{\sqrt n}}$ hence  

$t=\frac {67.6-69}{\frac {11.1}{\sqrt 171}}=-1.649313114$

The test static value is -1.649313114