2a. According to a Pew Research survey, about 25% of American adults are pessimistic about the future of marriage and the family. This is based on a sample, but assume this percentage is correct for all American adults. What is the probability that in a sample of 20 American adults, 23% or fewer of the people in the sample are pessimistic about the future of marriage and family

0.4181807

Step-by-step explanation:

Probability that American adults are pessimistic about the future of marriage and the family: p= 0.25

Sample size n= 20

Let be the sample proportion of American adults that are pessimistic about the future of marriage and the family.

Hence, the required probability = 0.4181807

answer: 270

step-by-step explanation:

you have to times 200 by 1.35 to get your answer

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2