Question

In a sample of 200 households, the mean number of hours spent on social networking sites during the month of January was 55 hours. In a much larger study, the standard deviation was determined to be 7 hours. Assume the population standard deviation is the same. What is the 99% confidence interval for the mean hours devoted to social networking in January?

Answer 1

@laughoutloud

Answer 2

@vera_ewing

Answer 3

@pooja195

Answer 4

@babylove2015

Answer 5

@badmood

Answer 6

@Preetha

Answer 7

@ganeshie8

Answer 8

@Hero

Answer 9

yea

Answer 10

help me

Answer 11

@myininaya

Answer 12

dude stawp tagging people ur just spamming now :/

Answer 13

me help :3

Answer 14

I need help

Answer 15

i answered this same question 15 minutes ago so lemmee see

Answer 16

@satellite73

Answer 17

one more tag then i quit

Answer 18

ok help me plz

Answer 19

are there choices?

Answer 20

ya

Answer 21

The 99% confidence interval ranges from 55 to 60 hours.
i think

Answer 22

The 99% confidence interval ranges from 53.73 to 56.27 hours.
The 99% confidence interval ranges from 7 to 55 hours.
The 99% confidence interval ranges from 54.51 to 55.49.
The 99% confidence interval ranges from 55 to 60 hours.

Answer 23

._.