A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if she wishes the estimate to be within five percentage points with 90​% ​confidence, assuming that ​(a) she uses the estimates of 22.8​% male and 19.8​% female from a previous​ year?
​(b) she does not use any prior​ estimates?

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

what are you doing do you need examples of variable questions?

step-by-step explanation:

5a-1=9               bring the one over the =

5a=10                     divide by your variable

a=2

brainliest? ?

here try this one

3a-24=0

step-by-step explanation:

a'(12.5,11.25)

slope=(y1-y2)/(x1-x2)

the answer is -6

step-by-step explanation:

the answer is -6 because its next to the variable m