Question

A survey of 500 non- fatal accidents showed that 134 involved the use of a cell phone. Find a point estimate for p, the population proportion of non- fatal accidents that involved the use of a cell phone.

Answer 1

0.268

Explanation:

The point estimate for a population proportion obtained through a sample is simply given by the number of occurrences in the sample (134 uses of phone), divided by the sample size (500 non-fatal accidents). The proportion 'p' is:

`p=(134)/(500)\\p=0.268`

The population proportion of non- fatal accidents that involved the use of a cell phone is 0.268.