Question

Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69.5 bpm. For a random sample of 155 adult​ males, the mean pulse rate is 70.9 bpm and the standard deviation is 10.9 bpm. Complete parts​ (a) and​ (b) below.

a. Express the original claim in symbolic form.

b. Identify the null and alternative hypotheses.

Answer 1

solution:

this is the two tailed test .  

The null and alternative hypothesis is ,

H0 :  The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69.5 bpm

Ha :   The mean pulse rate​ (in beats per​ minute) of adult males is not equal to 69.5 bpm

b

this the two tailed test .  

The null and alternative hypothesis is ,

H0 :   = 69.5

Ha :     69.5