Do teachers find their work rewarding and satisfying? an article reports the results of a survey of 399 elementary school teachers and 266 high school teachers. of the elementary school teachers, 226 said they were very satisfied with their jobs, whereas 126 of the high school teachers were very satisfied with their work. estimate the difference between the proportion of all elementary school teachers who are satisfied and all high school teachers who are satisfied by calculating a 95% ci. (use pelementary − phigh school. round your answers to four decimal places.)

both equations and proportions are better.

3

step-by-step explanation:

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.