6.2.61 area from z-score

Determine the area under the standard normal curve that lies to the right of left parenthesis a right (a) z = -0.74 (b) z= -0.24 (c) z= -0.39 and (d) z= -0.12

(a) The area to the right of z= -0.74 is Using pnorm() return the area to the left, in order to get the area to the right use 1 - pnorm()

1-pnorm(-0.74)

## [1] 0.77035

Round to four decimal places as needed. Use round() command

round(1-pnorm(-0.74), 4)

## [1] 0.7704

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(b) The area to the right of z= -0.24 is

(c) The area to the right of z= -0.39 is

(d) The area to the right of z= -0.12 is

Using the same approachh to get the answer

round(1-pnorm(-0.24), 4)

## [1] 0.5948

round(1-pnorm(-0.39), 4)

## [1] 0.6517

round(1-pnorm(-0.12), 4)

## [1] 0.5478

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Hope that helps!