Given a normal random van'able X with mean 41 and variance '15, and a random sample of size n taken from the distribution, what sample size n is necessary in order that P(4U.9s)_(s41_1}= 0.95? Click here to View page 1 of the standard normal distribution table. Click here to View page 2 of the standard normal distribution table. The necessary sample size is n = _ (Round up to the nearest whole number.)