The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 162 adult males, the mean pulse rate is 69.6 bpm and the standard deviation is 11.3 bpm. Find the value of the test statistic.

0.6758

Step-by-step explanation:

Given That:

Population Mean pulse rate (μ) = 69

Sample size (n) = 162

Sample mean (m) = 69.6

standard deviation (σ) = 11.3

Value of test statistic :

(m - μ) / (σ/√n)

(69.6 - 69) / (11.3 / √162)

0.6 / 0.8878118

= 0.6758

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

answer: howdy

step-by-step explanation: