CAN SOMEONE TELL ME IF I DID THIS CORRECTLY PLEASE?
IT HAS BEEN REPORTED THAT 83% OF FEDERAL GOVT EMPLOYEES USE EMAIL. IF A SAMPLE OF 200 FEDERAL GOVT EMPLOYEES IS SELECTED, FIND THE MEAN, VARIANCE, AND STANDARD DEVIATION OF THE NUMBER WHO USE EMAIL.
N= 200
P= .83
Q= .17
MEAN = N*P=(200)(.83)= 166
VARIANCE= (N)(P)(Q)=(200)(.83)(.17)=28.33 (DIDNT KNOW IF IM SUPOSED TO ROUND TO 28.3 OR NOT)
SD= SQUARE ROOT OF (N)(P)(Q)=5.3
AM I DOING THIS CORRECT? THANK YOU FOR YOUR TIME!
IT HAS BEEN REPORTED THAT 83% OF FEDERAL GOVT EMPLOYEES USE EMAIL. IF A SAMPLE OF 200 FEDERAL GOVT EMPLOYEES IS SELECTED, FIND THE MEAN, VARIANCE, AND STANDARD DEVIATION OF THE NUMBER WHO USE EMAIL.
N= 200
P= .83
Q= .17
MEAN = N*P=(200)(.83)= 166
VARIANCE= (N)(P)(Q)=(200)(.83)(.17)=28.33 (DIDNT KNOW IF IM SUPOSED TO ROUND TO 28.3 OR NOT)
SD= SQUARE ROOT OF (N)(P)(Q)=5.3
AM I DOING THIS CORRECT? THANK YOU FOR YOUR TIME!