Assume that men's weights are normally distributed with a mean of 172 lb and standard deviation of 29 lb (national health survey) if 81 men are randomly selected, find the probability that they have a mean weight less than 167 lb.

0.0606

Step-by-step explanation:

Given : The men's weights are normally distributed with a mean of 172 lb and standard deviation of 29 lb.

i.e. and

and sample size : n= 81

Let x be a random variable that denotes the men's weights.

Formula :

Then, the probability that they have a mean weight less than 167 lb will be :-

Hence, the  probability that they have a mean weight less than 167 lb = 0.0606

step-by-step explanation:

dong do iy iys a scram

is means division by fractions

step-by-step explanation: