In how many ways can 3
person study groups be
selected from a class of 25
students?

2300

Step-by-step explanation:

it just is also because the other answer is wrong and I used the one someone wrought in the comment and it worked I am doing my work on Acellus so if that is what you are doing it is wright

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:

a orange at the grocery store idk what other product that could be