Bundle: Statistics for Business & Economics, Loose-Leaf Version, 13th + MindTap Business Statistics with XLSTAT, 1 term (6 months) Printed Access Card
13th Edition
ISBN: 9781337148092
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Textbook Question
Chapter 18, Problem 42SE
The following data are product weights for the same items produced on two different production lines. Test for a difference between the product weights for the two lines. Use α = .05.
| Line 1 | Line 2 |
| 13.6 | 13.7 |
| 13.8 | 14.1 |
| 14.0 | 14.2 |
| 13.9 | 14.0 |
| 13.4 | 14.6 |
| 13.2 | 13.5 |
| 13.3 | 14.4 |
| 13.6 | 14.8 |
| 12.9 | 14.5 |
| 14.4 | 14.3 |
| 15.0 | |
| 14.9 |
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The following data are product weights for the same items produced on two different production lines. Test for a difference between the product weights for the two lines. Use a = .05.
Line 1
Line 2
13.6
13.3
14.9
14.7
14.1
15.2
13.5
14.6
14.0
15.2
13.4
13.3
14.6
14.6
14.1
14.7
13.5
13.6
13.8
13.7
14.8
13.8
What is the value of the test statistic? Enter negative value as negative number.
(to 2 decimals)
What is the p-value for the hypothesis test?
(to 4 decimals)
What is your conclusion?
The two populations of product weights - Select your answer - v identical.
The population of product weights from production line 1 tends to be - Select your answer
v the population of product weights from production line 2.
Answer only no. 2.
The data below are for two different types of straw seed that were used on adjacent plots of land. The listed values are the yields of straw in cwt (100 lb, or hundredweight) per acre, and the yields are paired by the plot of land that they share. Complete parts (a) through (c).
Type 1 Type 219.25 2523 23.7522.75 24.2522.75 28.2522.25 22.7519.5 19.7524.5 22.2515.5 1618 17.2514 1617 17.25
Using a 0.05 significance level, test the claim that there is no difference between the yields from the two types of seed. Let mu Subscript dμdbe the mean of the population of differences of type 1 minus type 2 and write the hypotheses.
The null hypothesis is
Upper H 0H0:
Upper H 1H1:
The test statistic is
State the conclusion that addresses the original claim.
Chapter 18 Solutions
Bundle: Statistics for Business & Economics, Loose-Leaf Version, 13th + MindTap Business Statistics with XLSTAT, 1 term (6 months) Printed Access Card
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