/sci/ - Science & Math

why does /sci/ have such a low opinion of engineers?
isn't engineering a tougher discipline than most branches of science?

>>3365088

lol this guy is still trying.

I want my exam results NOW :(

I have to wait at least two more days

THAT FEEL..

What the FUCK is the answer to this problem? It's RUINING my LIFE. Can't study ANYTHING ELSE
21. A university system enrolling hundreds of thousands of students is considering a change in the way students pay for their education. Presently the students pay $55 per credit hour. The university system administrators are contemplating charging each student a set fee of $750 per quarter, regardless of how many credit hours each takes. To see if this proposal would be economically feasible, the administrators would like to know how many credit hours, on the average, each student takes per quarter. A random sample of 250 students yields a mean of 14.1 credit hours per quarter and a standard deviation of 2.3 credit hours per quarter. Suppose the administration wanted to estimate the mean to within 0.1 hours at 95% reliability and assumed that the sample standard deviation provided a good estimate for the population standard deviation. How large a sample would they need to take?