the-distribution-of-ages-for-marathon-winners-in-a-certain-city-is-approximately

Question

The distribution of ages for marathon winners in a certain city is approximately bell-shaped, with a mean of $32.5$ years and a standard deviation of $4.2$ years. In $2012$ , the winner was $43$ years old. Find the $z$ -score for this age and state whether it is unusual.

Accepted Answer

$z equals 2.5$

Unusual

Answer

$z equals 2.5$

Not unusual

Answer

$z equals 2.5$

Unusual

Answer

$z equals 2.5$

Not unusual

The distribution of ages for marathon winners in a certain city is approximately bell-shaped, with a mean of 32.532.5 years and a standard deviation of 4.24.2 years. In 20122012, the winner was 4343 years old. Find the zz-score for this age and state whether it is unusual.

The distribution of ages for marathon winners in a certain city is approximately bell-shaped, with a mean of $32.5$ years and a standard deviation of $4.2$ years. In $2012$ , the winner was $43$ years old. Find the $z$ -score for this age and state whether it is unusual.