Please show your work stepbystep 34 Work on problem number 2

Please show your work step-by-step.

34. Work on problem number 28 (a-d) on page 7-26

Solution

a)

P(z<1.0) = 0.8413 from z table

1.0 = ( x - 50)/3

=> x =53 Answer

b)

P(z>1.96) = 0.025 from z table

1.96 = ( x - 50)/3

=> x =55.88 Answer

c)

P(z>-1.65) = 0.95 from z table

-1.65 = ( x - 50)/3

=> x =45.05 Answer

d)

Left z = (41-50)/3 = -3.0

0.8630 = P (xo) - 0.0013

=> P(xo) = 0.8643

Right z = 1.1

1.1 = ( x-50 )/3

=> x =53.3 Answer