Question

The birth weights (to the nearest pound) of a sample of 29 newborn babies at a certain hospital are given in the following table, along with the number of babies at each birth weight.Number of babies Birth weight (in pounds)babies-2 5babies-11 6babies-16 7Find the mean birth weight of these 29 babies. Round your answer to at least one decimal place.

Answer 1

Given: The birth weights (to the nearest pound) of a sample of 29 newborn babies at a certain hospital are given in the following table, along with the number of babies at each birth weight.

Number of babies Birth weight (in pounds)

babies-2 5

babies-11 6

babies-16 7

Required: The mean birth weight of these 29 babies.

Step-by-step explanation:

The total babies are 29.

Mean weight of babies is Total weight of 29 babies divided by total number of babies.

Now,

weight of 2 babies = 5

weight of 11 babies = 6

weight of 16 babies = 7

So total weight (in pounds) =

`\begin{gathered} (2*5)+(11*6)+(16*7) \\ =10+66+112=188 \end{gathered}`

Hence Mean weight(in pounds) is:

`Mean\text{ weight = }(188)/(29)=6.48`

Final Answer: Mean weight of babies is 6.48 pounds.