Question

A simple random sample is drawn from a normally distributed population, and when making a statistical inference about the population mean, the margin of error is found to be 5.9 at a 95% level of confidence. If the mean of the sample is 18.7, what is the 95% confidence interval for the population mean?
18.7 ± 5.9
18.7 ± 9.7
18.7 ± 11.6
18.7 ± 15.2

Answer 1

@MrCoolGuy

Answer 2

@rebeccaxhawaii Help?

Answer 3

hello kiddos i feel very loved being tagged here thanks you all ily very much <3

Answer 4

we need the best of the best so we call the best of the best

Answer 5

aweeeeeeeeeeeeee ily2 bb

Answer 6

i'm think C btw ily all just marry me babes

Answer 7

@FortyTheRapper please help

Answer 8

@umerlodhi Stop with the nonsense.

Answer 9

this is my last chance to pass this test..
i really need your guys help

Answer 10

Is this statistics?

Answer 11

i think so, idk tbh

Answer 12

I never had the opportunity to take statistics (nor probability)

Answer 13

are we going to go with C?

Answer 14

No, gimme 1 more sec to get someone to help.

Answer 15

oh alright, thank you very much

Answer 16

@mathmale

Answer 17

when you guys are done can you help me

Answer 18

The margin of error is the distance from the center of the confidence interval ( the sample mean), to the end of the interval.

Answer 19

@haleyelizabeth2017

Answer 20

i have zero idea what the answer is still and im running out of time on my test
..... im scarred im going to fail again

Answer 21

\[\large Confidence\ Interval=(\bar{x}-M.E.,\ \bar{x}+M.E.)\]

Answer 22

im guessing either A or C

Answer 23

?

Answer 24

It's also \[Confidence~interval=x \pm M.E.\]

Answer 25

Which, is just a simplified version of what @kropot72 said

Answer 26

x=18.7....and M.E. is given..

Answer 27

so A

Answer 28

right?

Answer 29

Right.