(a) Fill in the sample means in the table.
by net reund your answers.
\begin{tabular}{|c|c|c|}
\hline sample & & \\
\hline 1 & \( 7,9,5,7,5,5,8,9 \) & \\
\hline 2 & \( 9,4,7,7,4,7,7,8 \) & D \\
\hline 3 & \( 17,8,7,4,4,8,4,7 \) & — \\
\hline
\end{tabular}
(b) Use the lable to calculate the range of the cumple measis.
Divale of sarmple masne: \( \square \)
(c) The shyderes are going to use the sample means to eutimate the ment mord length in the book.
Selod all the Inue staberterta beloa.
\( \qquad \) A single sample mean will tend to be a worse eflimate than the meas of the sample meant.
