Question

The table below summarizes the birth weights to the nearest pound of a sample of 36 newborn babies find the mean birth weight of these 36 babies round your answer to the nearest tenth

Answer 1

To determine the mean, divide the sum of the products of the number of babies and the birth weight of each by the total number of sample.

Thus, we have the following:

`\bar{x}=(6(5)+7(6)+16(7)+7(8))/(36)`

Simplifying the numerator, we have the following.

`\begin{gathered} \bar{x}=(30+42+112+56)/(36) \\ \bar{x}=(240)/(36) \end{gathered}`

Therefore, the mean is as follows.

`\bar{x}=6.\bar{6}\approx6.7`