Zainab runs her own business where she leads guided day-long tours for small groups of tourists in her city. Each

tour has a maximum of 3 guests. Let X represent the number of customers Zainab gets on a randomly chosen

day. Based on previous data, here is the probability distribution of X along with summary statistics:

X = #of customers

0

1

P(X)

0.20

0.10

0.40

0.30

Mean: Hx = 1.8

Standard deviation: Ox 1.08

Pro

Tee

It costs Zainab $5 each day to pay for her own transportation to her business, and then each customer she gets

pays her $60. Let Y represent Zainab's net gain on a randomly chosen day.

What are the mean and standard deviation of Y?

Hy =

dollars

dollars

Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 7 5 11 14 which of the following is a scatter diagrams accurately represents the data? what does the scatter diagram developed in part (a) indicate about the relationship between the two variables? try to approximate the relationship betwen x and y by drawing a straight line through the data. which of the following is a scatter diagrams accurately represents the data? develop the estimated regression equation by computing the values of b 0 and b 1 using equations (14.6) and (14.7) (to 1 decimal). = + x use the estimated regression equation to predict the value of y when x = 4 (to 1 decimal). =