Thursday

November 20, 2014

November 20, 2014

Posted by **Robbie** on Sunday, October 14, 2012 at 12:07am.

The distribution of driving times is approximately normal with a standard deviation of σ = 5

minutes. For a randomly selected morning, what is the probability that John’s drive to work

will take less than 35 minutes?

- Statistics -
**MathGuru**, Monday, October 15, 2012 at 8:30pmUse z-scores.

z = (x - mean)/sd

With your data:

z = (35 - 38)/5

Finish the calculation, then check a z-table for the probability of less than 35 minutes using the z-score.

I hope this will help get you started.

**Answer this Question**

**Related Questions**

statistics - John drives to work each morning and the trip takes an average of...

Statistics - John drives to work each morning and the trip takes an average of m...

statistics - John drives to work each morning and the trip takes an average of...

math - John drives to work each morning and the trip takes an average of µ = 38 ...

math - The length of Paulo’s lunch break follows a normal distribution with mean...

statistics - According to the Census Bureau's 2002 American Community Survey, ...

statistics - According to the Census Bureau's 2002 American Community Survey, ...

Statistics - 1. The average time it takes for a cellphone to reboot is 3 ...

Statistics - Suppose an automobile association reports that the average time it ...

Statistics - A student group claims that first-year students at a university ...