I recommend
http://davidmlane.com/hyperstat/z_table.html
for you last two questions
The numbers of cookies in a shipment of bags are normally distributed, with a mean of 64 and a standard deviation of 4. What percent of bags of cookies will contain between 60 and 68 cookies?
* 50%
* 13.5%
* 68%
* 34%
7 answers
Thank you so much!
13
C. 68%
what is the answer
It is 34%
Correct, the answer is 34%.