Download presentation

Presentation is loading. Please wait.

Published byBenny Elson Modified over 2 years ago

1
Final Review Answers

2
Two-Tailed t Test Solution -1 H 0 : H a : = df = Critical Value(s): Test Statistic: Decision: = 368 368.05 25 - 1 = 24 t 02.064-2.064.025 Reject H 0 0.025 Reject at =.05 P-value = 0

3
Two-Tailed Z Test Solution -2 H 0 : H a : = n = Critical Value(s): Test Statistic: Decision: = 70 70.05 36 Z 01.96-1.96.025 Reject H 0 0.025 Do not reject at =.05

4
One-Tailed Z Test Solution -3 H 0 : H a : = n = Critical Value(s): Test Statistic: Decision: = 32 < 32.01 60 Z 0-2.33.01 Reject Reject at =.01

5
Two-Tailed t Test Solution-4 H 0 : H a : df Critical Value(s): Test Statistic: Decision: = 3.25 3.25.01 64 - 1 = 63 t 02.656-2.656.005 Reject H 0 0.005 Do not reject at =.01

6
One-Tailed t Test Solution - 5 H 0 : H a : = df = Critical Value(s): Test Statistic: Decision: = 140 < 140.05 20 - 1 = 19 t 0-1.729.05 Reject H 0 Reject at =.05

7
One-Tailed t Test Solution -6 H 0 : H a : = df = Critical Value(s): Test Statistic: Decision: = 5 < 5.05 10 - 1 = 9 t 01.833.05 Reject H 0 Do not reject at =.05

8
One-Proportion Z Test Solution - 7 H 0 : H a : = n = Critical Value(s): Test Statistic: Decision: p =.10 p <.10.05 200 Z 0-1.645.05 Reject H 0 Reject at =.05

9
One-Proportion Z Test Solution - 8 H 0 : H a : = n = Critical Value(s): Test Statistic: Decision: p =.04 p .04.05 500 Z 01.96-1.96.025 Reject H 0 0.025 Do not reject at =.05

10
1.Miles per gallon ratings of cars before and after mounting radial tires - DEPENDENT 2.The life expectancy of light bulbs made in two different factories - INDEPENDENT 3.Difference in hardness between two metals: one contains an alloy, one doesn’t - INDEPENDENT 4.Tread life of two different motorcycle tires: one on the front, the other on the back - DEPENDENT 9

11
H 0 : H a : df Critical Value(s): 1 - 2 = 0 ( 1 = 2 ) 1 - 2 0 ( 1 2 ).05 11 -1 = 10 t 02.228-2.228.025 Reject H 0 0.025 Small-Sample Test Solution 10-A Test Statistic: Do not reject at =.05

12
H 0 : H a : df Critical Value(s): 1 - 2 = 1% ( 1 = 2 ) 1 - 2 1% ( 1 2 ).05 11 -1= 10 Small-Sample Test Solution 10-B Test Statistic: Do not reject at =.05 t 0-1.812.05 Reject H 0

13
Large-Sample Test Solution - 11 H 0 : H a : n 1 =, n 2 = Critical Value(s): t 0 1.761-1.761.05 Reject H 0 0.05 1 - 2 = 0 ( 1 = 2 ) 1 - 2 0 ( 1 2 ).10 15 15 Do not reject at =.10

14
Paired-Difference Solution-12 H 0 : H a : = df = Critical Value(s): d = 0 ( d = A - B ) d < 0.10 4 - 1 = 3 t 0-1.638.10 Reject H 0

15
Computation Table ObservationBeforeAfterDifference Sam85949 Tamika9487 -7 Brian78791 Mike87881 Total4 d = 1S d = 6.53

16
Test Statistic: Decision: Do not reject at =.10

17
H 0 : H a : = n 1 = n 2 = Critical Value(s): p 1 - p 2 = 0 p 1 - p 2 0.01 7882 z 0 2.58-2.58 Reject H 0 0.005 Test for Two Proportions Solution -13

18
Reject at =.01

19
H 0 : H a : = n MA = n CA = Critical Value(s): p MA – p CA = 0 p MA – p CA < 0.05 1500 Z 0-1.645.05 Reject H 0 Test for Two Proportions Solution - 14

20
Reject at =.05

21
H0: Ha: = n 1 = n 2 = n 3 = Critical Value(s): p 1 = p 2 = p 3 = 1/3 At least 1 is different.05 634572 =.05 2 0 Reject H 0 5.991 2 Test for k Proportions Solution - 15

22
Reject at =.05

23
2 Test of Independence Solution - 16 H 0 : H a : = df = Critical Value(s): No Relationship Relationship.05 (2 - 1)(2 - 1) = 1 2 0 Reject H 0 3.841 =.05

24
112·82 160 48·78 160 48·82 160 112·78 160

25
Reject at =.05

26
2 Test of Independence Solution -17 H 0 : H a : = df = Critical Value(s): No Relationship Relationship.05 (2 - 1)(2 - 1) = 1 2 0 Reject H 0 3.841 =.05

27
170·132 286 170·154 286 116·132 286 154·132 286

28
Reject at =.05

Similar presentations

Presentation is loading. Please wait....

OK

1 1 1 =.

1 1 1 =.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on fire extinguisher types and sizes Ppt on aircraft emergencies with atc Ppt on regional transport office ahmedabad Ad mad show ppt on tv Ribosome display ppt online Animated ppt on magnetism facts Ppt on drugs and medicines Ppt on ms access query Free ppt on c language Ppt on management by objectives definition