claim: the mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. for a random sample of 171 adult males, the mean pulse rate is 67.6 bpm and the standard deviation is 11.1 bpm. find the value of the test statistic.

-1.649313114

Step-by-step explanation:

Sample size, n=171

Sample mean, x=67.6

Standard deviation, s=11.1

Study claims mean pulse

Null hypothesis

Test statistic is given by

hence  

The test static value is -1.649313114

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

srry idk

step-by-step explanation: