How would you describe the effect that doubling the sample size would have on the width of a one-proportion confidence interval, if the confidence level and sample proportion remain the same? The new interval would be about one-fourth the size of the previous interval. The new interval would be about half the size of the previous interval. The new interval would be about 70% the size of the previous interval. The new interval would be about 140% the size of the previous interval. The new interval would be about double the size of the previous interval.

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

or

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.