Question

The scores for an English exam are found to be normally distributed with a mean of 70% and a standard deviation of 5%. If the test is given to 160 students, how many are expected to have scores between 70% and 75%?

Answer 1

you can play around with Z table stuff at

http://davidmlane.com/hyperstat/z_table.html

Answer 2

But what r the steps to solve this? I dont seem to understand how the website works.

Answer 3

I dont want the answer. I just need some clues to help me understand the question

Answer 4

Can I please get some help with this question

Answer 5

OK I have waited long enough for an answer to this question. I still dont understand what I am doing I can't even retype this question. I asked for help so many times I am fed up. No one actually helps here when someone is in need or doesn't understand. They may not have anybody else to help them please try to do better.

Answer 6

I actually feel so ignored. You give me some random web that I don't know how to use. and then you leave

Answer 7

NOT VERY HAPPY AT THIS MOMENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!