In a test of physical fitness, a group of men ages 65 and older from a local retirement community were told to do as many sit-ups as they could. it is known the population mean μ is 20 with σ^x-8. the scores for the men from the retirement community are given below. what is the sample mean?

24 25 10 23 18 29 47 32

19 24 20 28 21 20 27 25

a. 1.25

b. 4.00

c. 0.5

d. 2.00

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

the answer is a

step-by-step explanation:

what

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: