An average dry erase marker manufactured by the F&M Corporation lasts 300 days with a standard deviation of 60 days. Assuming that dry erase marker life is normally distributed, what is the probability that such a dry erase marker will last at least 480 days? Standard Normal Curve 2 + of

Assume that adults have IQ scores that are normally distributed with a mean of mu = 100 and a standard deviation sigma = 20. Find the probability that a randomly selected adult has an IQ between 84 and 116 and type an integer or decimal rounded to four decimal places. Make sure to use the positive or negative z score charts attached, in the eBook on MSL, or in a hardcopy of the textbook.

The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 36 liters, and standard deviations of 16 liters. I What is the probability that daily production is less than 43 liters (round your answer to 4 decimals) CS Scanned with CamScanner

High density lipoprotein (HDL) in healthy males follows a normal distribution with a mean of 50 and a standard deviation of 8. What proportion of healthy males has HDL exceeding 60?

Random samples of size 46 are drawn from a population with mean 161.9 and standard deviation 16.1. Find the mean and the standard deviation of the sample mean. Round to four decimal places.Mean = Standard Deviation = Enter your answer as a number accurate to 4 decimal places.

Assume that children's IQs (Age 6-12) follow a normal distribution with mean 100 and standard deviation of 12. Find the probability that a randomly selected child has IQ above 118.