A researcher has participants choose between three advertisements. She finds that 54 prefer Ad A, 86 prefer Ad B, and 60 prefer Ad C. The probability or proportion of participants preferring Ad B is

0.43 is the required probability.

Step-by-step explanation:

We are given the following in the question:

Number of participants that prefer Ad A = 54

Number of participants that prefer Ad B = 86

Number of participants that prefer Ad C = 60

Total number of participants =

We have to find the proportion of participants preferring Ad B.

Proportion =

Thus, 0.43 is the proportion of participants preferring Ad B.

- 70

this is the answer for you hope it

55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.