Answer:
Rate of Pay is $11 per hour.
Step-by-step explanation:
Cost of of work = $ 82.50
To find: Rate of pay
Here Rate of Pay means Cost of 1 hour of work or we can say cost of per hour work.
⇒ Cost of of work = $ 82.50
Cost of 1 hr of work =
=
=
= $ 11
Therefore, Rate of Pay is $11 per hour.
The empirical rule you're referring to is the 68-95-99.7 rule, which asserts that for a normal (bell-shaped) distribution, approximately 68% of the distribution lies within 1 standard deviation of the mean; 95% lies within 2 standard deviations of the mean; and 99.7% lies within 3 standard deviations of the mean.
Let be the random variable denoting vehicle speeds along this highway. We want to find
. To use the rule, we need to rephrase this probability in terms of the mean and standard deviation.
Notice that , and
. In other words, 61 and 79 both lie exactly 3 standard deviations away from the mean, so
.