Question

A confidence interval for the population mean length of hit songs was found to be 4.1 to 5.3 minutes. Find the point estimate (that is, find the midpoint of this confidence interval.)

Answer 1

4.7

Explanation:

Given :

initial mean length =4.1 minutes.

Final mean length =5.3 minutes

The mid point of the given interval can be determined by the

`Midpoint \ = (Initial\ Mean\ length\ +Final\ Mean\ length )/(2) \\Midpoint \ = (4.1\ +\ 5.3\ )/(2) \\Midpoint \ = (9.4 )/(2) \\Midpoint \ =4.7\\`

Therefore 4.7 is the midpoint