77+78+79+80=314 Is Your Answer
Answer:
24
Step-by-step explanation:
Factorial means take the number given and multiply by that number and every number down
4! = 4*3*2*1
= 24
Gym a:
$65 + $20 per month
$65 + 20m m=month
gym b:
$25 + $35 per month with 20% discount
$25 + $28m
Since we want to estimate the percentage of adults in the town who belong to a gym. We should take a random sample from the town itself because a store’s adult customers, or their friends, or first 20 customers every day for one week, or adults at the local park might not represent better sample for survey.
Therefore, Take a random sample of adults in the town, and ask each person whether he or she belongs to a gym. Calculate the percentage of the total who say “yes.”
Hence, option D describes a method that will help the marketing department accurately estimate this percentage.