Question

The number of potato chips in a bad is normally distributed with a mean of 75 and a standard deviation of 5 approximately what precent of bags contain between 65 and 85 potato chips

Answer 1

95%

Explanation:

We have that:

The number of potato chips in a bad is normally distributed with a mean of 75 and a standard deviation of 5.

We want to use the empirical rule to solve this:

We know that:

65=75-2(5)

That means

`65 = 75 - 2 \sigma`

Also, 85=75+2(5)

`85 = 75 + 2 \sigma`

According to the the empirical rule approximately 95% of the distribution is within 2 standard deviation of the mean