Need the answer for Question b at the bottom

.IQ scores are normally distributed with a mean of

100

and a standard deviation of

16

.

Assume that many samples of size n are taken from a large population of people and the mean IQ score is computed for each sample.

a. If the sample size is

nequals

64,

find the mean and standard deviation of the distribution of sample means.

The mean of the distribution of sample means is

100

.

The standard deviation of the distribution of sample means is

2

.

(Type an integer or decimal rounded to the nearest tenth as needed.)

b. If the sample size is

nequals

144,

find the mean and standard deviation of the distribution of sample means.

The mean of the distribution of sample means is

nothing

.Need the answer to B.