Normal distribution central limit theorem

label Statistics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

An  average number of hours that a kid spends per day working At a computer is3.5 hours with a STDV of 0.9 hours.Whats the probability that a randomly selected sample of 12 kids tospend an average of more than 3.8 hours per day working on a computer?

Mar 14th, 2015

xbar =3.8

mu =3.5

sigma =0.9

n =12

z = (3.8-3.5)/(0.9/sqrt(12)) = 0.3 *sqrt(12)/0.9 = 1.15

P(z> 1.45) =0.1251

Answer: 0.1251 or 12.51%

Mar 14th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Mar 14th, 2015
...
Mar 14th, 2015
Jun 27th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer