Question

PLEASE HELP!!! The physics scores of 200 students follow a normal distribution with a mean of 75 and a standard deviation of 7. Which conclusion is best supported by this information?

Answer 1

wheres the conclusions?

Answer 2

what do you mean?

Answer 3

the answers?

Answer 4

yep..is it a mcq

Answer 5

A. About 32 students have a score higher than 89.
B. About 4 students have a score higher than 89.
C. About 100 students have a score higher than 89.
D. About 4 students have a score lower than 89.
E. About 32 students have a score lower than 89.

Answer 6

those are the choices

Answer 7

@magbak help this person out

Answer 8

IT IS A

Answer 9

The number of books borrowed weekly from a library follows a normal distribution with a mean of 190 and a standard deviation of 30. Which conclusion does this information best support?

Answer 10

A. There is a 16% chance that more than 250 books are borrowed in a week.
B. There is a 2.1% chance that more than 250 books are borrowed in a week.
C. There is a 68% chance that fewer than 250 books are borrowed in a week.
D. There is an 84% chance that more than 250 books are borrowed in a week.
E. There is an 84% chance that fewer than 250 books are borrowed in a week.

Answer 11

@magbak

Answer 12

One sec please.

Answer 13

is there any formula or anything

Answer 14

@magbak people better not see u giving answers without workings...they'll torture u figuratively

Answer 15

thats why i asked for formula lol

Answer 16

Ok then.

Answer 17

what?

Answer 18

Can you wait one sec please I beg you I will explain it all right now.

Answer 19

yea sorry

Answer 20

No problem

Answer 21

It is D

Answer 22

are you sure?

Answer 23

Yes of course.