Question

MEDAAALL!!
A simple random sample of 50 adults was surveyed, and it was found that the mean amount of time that they spend surfing the Internet per day is 54.2 minutes, with a standard deviation of 14.0 minutes. What is the 99% confidence interval for the number of minutes that an adult spends surfing the Internet per day?

Answer 1

@snazzychazzy

Answer 2

Ok what are the answers?

Answer 3

A. 49.1 minutes to 59.3 minutes
B. 50.3 minutes to 58.1 minutes
C. 54.2 minutes to 58.1 minutes
D. 54.2 minutes to 59.3 minutes

Answer 4

Hmmm

Answer 5

What makes you say C?

Answer 6

Openstudy is to help with the question not to give answers from the code of conduct

Answer 7

http://openstudy.com/code-of-conduct

Answer 8

Ok

Answer 9

so if they deviate from the computer for 14 minutes so subtract 54.2-14 and tell me what you get

Answer 10

wait hang on

Answer 11

no, its a because its 7 minutes in front of the number and after the number

Answer 12

what still make you say A are you guessing or do you know how and can tell us because the code of conduct says to help with the problem not just give the answer

Answer 13

i just told you because A.49.1 minutes to 59.3 minutes is 7 below 54.2 minutes and 7 above the number. do you understand?

Answer 14

but why would it be 7 minutes below and above the number?

Answer 15

even read the code of conduct it says to explain and not to give the answer

Answer 16

because its 14 and you half it so then you add seven to 54.2 minutes and subtract to get the two answers

Answer 17

were does it say to half it?

Answer 18

you know forget it im not explaining it again and its given , if you knew how to do the dang problem then you should know but w.e how about you help rather than just ask me ?? ok then

Answer 19

wow i am just doing what the code of conduct said to do by helping people out by EXPLAINING

Answer 20

ok but i dont see you helping.....

Answer 21

bye

Answer 22

i did last question

Answer 23

I need help with this question, @snazzychazzy