Drivers who are members of the teamsters Union earn an average of $17.15 per hour (U. S. News & World Report). Assume that available data indicate wages are normally distributed with a standard deviation of $2.25. 1) What is the probability that wages are between $15.00 and $20.00 per hours?

And we can find the probability with this difference and using the normal standard table:

Step-by-step explanation:

Let X the random variable that represent the wages, and for this case we know the distribution for X is given by:

Where and

We want to find this probability:

And we can use the z score formula given by:

Using this formula we have:

And we can find the probability with this difference and using the normal standard table:

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1

what graph

step-by-step explanation: