Question

!!!!!!!URGENT 20 POINTS!!!!!!!!!!!!!!!!!!

The weights of packages of crackers follow a normal distribution with a mean of 15.2 oz. and a standard deviation of .5 oz. If x-bar is the mean weight of a SRS of 7 packages of crackers, then x-bar has an _______ Approximate distribution with mu equal to 15.2 and sigma equal to 0.2 Exact normal distribution with mu equal to 15.2 and sigma equal to 0.4 Exact normal distribution with mu equal to 15.2 and sigma equal to 0.2 Approximate distribution with mu equal to 15.2 and sigma equal to 0.4 Exact distribution with mu equal to 14.6 and sigma equal to 1

Answer 1

Since we are given that
the mean is 15.2 oz
standard deviation of 0.5 oz
and simple random sample of 7
then we have an
Exact normal distribution with mu equal to 15.2 and sigma equal to 0.4
since the samples are simple and random