A Sample of 8 New Models of Automobiles Provides the Following

Essay

A sample of 8 new models of automobiles provides the following data on highway miles per gallon. Use Excel to answer the questions that follow the data. $$\begin{array} { l l } \text { Model } & \begin{array} { l } \text { Highway Miles } \\\text { per Gallon }\end{array} \\\hline 1 & 33.6 \\2 & 26.8 \\3 & 20.2 \\4 & 38.7 \\5 & 35.1 \\6 & 28.0 \\7 & 26.2 \\8 & 27.6\end{array}$$ ​
a.
What is the point estimate for the average highway miles per gallon for all new models of autos?
b.
Determine the point estimate for the standard deviation of the population.