Sophia Lipp

Chapter 10.1

9

Right tailed, mu.

10

left-tailed, proportion

11

two-tailed, standar deviation

12

right tail, proportion

13

left tail, mu

14

two-tailed, standard deviation

15

Ho: p = .105

H1: p > .105

Type 1 error: Determining the true proportion p is greater then .105 when it is not.

Type 1 error: Determining the true proportion p is not greater then .105 when it is.

17

Ho: Mu = $218600

H1: mu < $218600

  1. thought that the mean price decreased, when in reality it had not decreased… type II

  2. thought that the mean price did not decrease, when in reality it had decreased…type I

19

Ho: sig = 0.7 psi

H1: sig < 0.7 psi

  1. rejects 0.7 psi as required standard deviation presssure when the true standard dev pressure is 0.7 psi…type II

c.doesn’t reject standard dev. pressure as 0.7 psi when in reality it is actually less than 0.7 psi… Type I

21

Ho: mu = $47.47

H1: mu /=/ $47.47

  1. does not think the mean cell phone bill is $47.47 when in reality it is…Type I

  2. thinks the bill mean is $47.47 when in reality it is different than $47.47… Type II

Chapter 10.2. You only need to do the pvalue approach.

7

np(1-9) is greater then or equal to 10.

The Pvalue = .0104

Reject the Null Hypothesis.

9

np (1-p) is greater than or equal to 10

The Pvalue = .2296.

do not reject null hypothesis

11

np (1-p) is greater than or equal to 10

The Pvalue = 0.1362

do not reject

13

do not reject null hypothesis,

15

The Pvalue = 0.2578

do not reject

17

The Pvalue = 0.1379

do not jreject null hypothesis

19

The Pvalue = 0.0047

reject null hypothesis