In: Statistics and Probability
claim: the mean pulse rate (in beats per minute )of adult males us equal to 69.5 bpm. for a random sample if 128 adult males, the mean pulse rate us 70.6 bpm and the standard deviation is 10.8 bpm. complete parts (a) and (b) below. a.Express the original claim in symbolic form.
Solution :
= 69.5
=70.6
S =10.8
n = 128
This is the two tailed test .
The null and alternative hypothesis is ,
H0 : = 69.5
Ha : 69.5
Test statistic = t
= ( - ) / S / n
= (70.6-69.5 ) / 10.8 / 128
= -0.115
Test statistic = t = -0.115