A nationwide survey of college seniors by a university revealed that almost 80​% disapprove daily pot​ smoking, according to a report in a magazine. If 11 seniors are selected at random and asked their​ opinion, find the probability that the number who disapprove of smoking pot daily is​ (a) anywhere from 7 to 10​, ​(b) at most 5 and​ (c) not less than 8.

kbmflmklbhml; bmlzb; bdhzz

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation: