chapters 18 & 19

Question 1

z-model method for finding area under the normal model curve

Answer 1

use the z-score of a value in the standard normal model N(0,1)

Question 2

Ha: p> and p<

Answer 2

1 tail

Question 3

Ha: p not equal to

Answer 3

2 tails

Question 4

A = …?

Answer 4

ncdf(lower, upper, p, SD)

SD uses P, not xbar

Question 5

finding A using z

Answer 5

z = (xbar-p)/SD(xbar)
A = ncdf(lower, upper, 0, 1)

Question 6

p value for 1 tail

Answer 6

A

Question 7

p value for 2 tails

Answer 7

2A