Question

A random sample of bolts is taken from inventory, and their lengths are measured. The average length in the sample is 5.3 inches with a standard deviation of .2 inches. The sample size was 50. The point estimate for the mean length of all bolts in inventory is

Answer 1

`L_x=5.3 inches`

Explanation:

Average length
`\=x =5.3 inches`

Standard deviation
`\sigma=0.2 inches`

Sample size
`n=50`

Generally The point estimate for the mean length of all bolts in inventory is

`L_x= \=x`

`L_x=5.3 inches`