The owner of a computer repair shop has determined that their daily revenue has mean $7200 and standarddeviation $1200. The daily revenue totals for the next 30 days will be monitored. What is the probability thatthe mean daily revenue for the next 30 days will be between $7000 and $7500

And we can use the z score formula to solve this problem

And replacing we got:

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

Step-by-step explanation:

Let X the random variable that represent the daily revenue of a population, and for this case we know the distribution for X is given by:

Where and

We are interested on this probability

And we can use the z score formula to solve this problem

And replacing we got:

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

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation:

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.