91Ó°ÊÓ

The numbers of pages in these books are $64,66,71,73,76$

Three of the five population values are represented in a sample of size $n=3.$

The sample median is the middle value of the sample's data values.

In the above dot plot graph the associating number on the line which is looking forth,

The numbers of pages in these books are $64,66,71,73,76$

Here, we want to increase the sample size from $n=3∘n=4$

By expanding the sample size, more information about the population is obtained, and hence the estimations are more accurate.

If the estimates are more precise, they will deviate less from the true population value, reducing the variability of the sampling distribution.

The numbers of pages in these books are $64,66,71,73,76$

Consider,

The sample median

For $\mathrm{n}=3$, The sampling distribution's median ranges from 66 to 73, and for $n=4$, The sampling distribution's sample medians vary from 68.5 to 72. .

It is discovered that the sample medians in the sampling distribution for $n=4$therefore the sample medians in the sampling distribution do indeed vary less than the sample medians for$n=3$, which supports the answer in part (b)