Question

100 students take a course pass/fail. If they pass they get 4 points towards their GPA, if they fail they get 0. If 90 students pass, what is the mean and standard deviation (to 1 decimal) of the points earned?

Answer 1

10 of them fail so 10 of them get 0 and no points to there GPA

Answer 2

did that help?/

Answer 3

exactly

Answer 4

A little bit but I need to know how to work the problem.

Answer 5

like what r the answer choices

Answer 6

There are none I have to type the answers in.

Answer 7

what is it asking u % ect

Answer 8

That was a copy and paste. I just highlighted the question and posted it.

Answer 9

@imqwerty

Answer 10

This is confusing..

Answer 11

It wants to know the mean and the Standard Deviation:

Answer 12

@mathmale

Answer 13

@mathstudent55

Answer 14

whta is a mean?
and what is standard deviation @tootsi123

Answer 15

That's what I have to figure out.

Answer 16

total product / total number = mean
fr ex you have 20 mangoes each of weight 10gm and 30 oranges of weight 20gm mean is
20 x 10 + 30 x 20 / 20+30
that is mean

now take this mean square it
on other side take the amounts and square it then take its mean
now subtract both you ll have standard derivation

Answer 17

okay thank you