Answer:
1.3659
Step-by-step explanation:
Given: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm.
For a random sample of 170 adult males, the mean pulse rate is 70.1 bpm and the standard deviation is 10.5 bpm.
To Find: Find the value of the test statistic.
Solution:
n =170
Since sample size is greater than 30
So, we will use z test
[tex]\mu = 69[/tex]
The mean pulse rate = x= 70.1 bpm
Standard deviation= [tex]\sigma=10.5[/tex]
n = 170
Formula : [tex]z =\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
Substitute the values
[tex]z =\frac{70.1-69}{\frac{10.5}{\sqrt{170}}}[/tex]
[tex]z =1.3659[/tex]
Hence the value of the test statistic is 1.3659
