Answer:
The probability that for the second sample of 500 college students, the mean number of hours worked will be less than 14.6 is 0.6554
Explanation:
The sampling distribution of the sample mean is given by a normal distribution with mean
and variance
, where
is the mean and
is the variance of the population that generates the data. In this way the random variable;
is a standard normal variable. As
, then
.
