Question

A marketing research company records the consumer habits of a sample of 27 families from a certain community. The table below summarizes the number ofgallons of milk consumed by these families during the last month.Number of families Gallons of milk144167For these families, what is the mean number of gallons of milk consumed last month? Round your answer to at least one decimal place.0 gallons5?I Don't KnowSubully2022 McGwHILLC. All Rights Reserved. Terms of Use Privacy Center 1Type here to search46°F

Answer 1

ANSWER

$\begin{gathered} 11.25 \\ \cong11.3 \end{gathered}$

EXPLANATION

From the given table;

Recall that mean is calculated using;

$\begin{gathered} x=\frac{\sum_^fx}{\operatorname{\sum}_^x} \\ \end{gathered}$

The summation of frequency and the number of families is;

$\sum_^fx=7\times1+4\times4+16\times7=135$

The summation of the frequency is;

$\begin{gathered} \sum_^x=1+4+7 \\ =12 \end{gathered}$

Applying the formula; Mean;

$\begin{gathered} x=\frac{135}{12} \\ =11.25 \end{gathered}$

The mean is 11.3 to one decimal place.