Suppose that the length of research papers is normally distributed with a mean of 12.5 pages pages and a standard deviation of 4.5 pages. We survey a class in which 36 research papers were turned in to a professor. What is that the probability that a paper will be less than 11 pages long?

Question

amistre64 · Answer

im not sure how important the 36 sample size is, we either adjust the standard deviation by it, or we dont ...

amistre64 · Answer

its either going to be  

P(z < (11-12.5)/4.5)
             or
P(z < sqrt(36)(11-12.5)/4.5)

anonymous · Answer

Thank you very much!