Question

​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 125 adult​ males, the mean pulse rate is 68.3 bpm and the standard deviation is 11.4 bpm. Find the value of the test statistic.

Answer 1

0.6865

Explanation:

test statistic is given by the formula

test statistic =
`\frac{\bar{x}-\mu }{(\sigma )/(√(n))}`

where
`\bar{x}`= mean of the sample

μ= mean

n= sample space

σ= standard deviation

we have given mean of sample
`\bar{x}` =69

mean μ=68.3

σ=11.4

sample space=125

putting all these value in formula of test statistic

test statistic=
`(69-68.3)/((11.4)/(√(125)))`

=0.6865