The customer center in your company receives calls from customers who need with some of the customized software solutions your company provides. your company claims that the average waiting time is seven minutes at the busiest times, 8 a. m. to 10 a. m., monday through thursday. one of your main clients has recently complained that every time she calls during the busy hours, the waiting time exceeds seven minutes. you conduct a statistical study to determine the average waiting time with a sample of 35 calls for which you obtain an average waiting time of 8.15 minutes. if the value of your test statistic is less than the critical value, the correct decision is to

a. increase the sample size
b. reduce the sample size
c. fail to reject the seven-minute average waiting time claim
d. maintain status quo
e. reject the seven-minute claim

A. increase the sample size

Step-by-step explanation:

By increasing sample size, the amount of data included in the statistical calculation is more. As the size increases, the uncertainty decreases, hence the confidence level on our estimate is higher. By having more sample, we have more accurate analysis, and our margin of error can be reduced as well.

the answer to the question is a  

it has the same slope and the same y-intercept.

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.