Problem 31: Heights of Women


label Statistics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Heights of Women: In a survey of women in the United States (ages 20-29), the mean height was 64.3 inches with a standard deviation of 2.6 inches.

(a) What height represents the 95th percentile?
(b) What height represents the firs quartile?

Nov 23rd, 2017

a) The probability closest to 0.95 on the table is 0.9495, which happens at z = 1.64.

Solving the equation 1.64 =  (x- 64.3)/2.6 for x, 

z = 1.64 * 2.6 + 64.3 =  4.264 + 64.3 = 68.564

we get that the 90th percentile is 68.56.


b) 

The probability closest to 0.25 on the table is 0.2514, which happens at z =

Mar 31st, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Nov 23rd, 2017
...
Nov 23rd, 2017
Nov 24th, 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