Random groups of 30 teachers were asked the starting annual salary for their first teaching job. The sampling variability was low. If the average salaries of
several of the groups were close to $43,000, which of these is least likely to
be the average salary of another one of the groups?
A. $53,000
B. $44,000
C. $42,000
D. $43,000

46.2+112.3

step-by-step explanation:

the answer is d

hope this

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.