CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM
13th Edition
ISBN: 9781337094399
Author: Cochran
Publisher: IACCENGAGE
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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
CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM
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Ch. 18.1 - Competition in the personal computer market is...Ch. 18.2 - Two fuel additives are tested to determine their...Ch. 18.2 - A sample of 10 men was used in a study to test the...Ch. 18.2 - Percents of on-time arrivals for flights in the...Ch. 18.2 - A test was conducted for two overnight mail...Ch. 18.2 - The LPGA ANA Inspiration tournament was held in...Ch. 18.2 - The Scholastic Aptitude Test (SAT) consists of...Ch. 18.3 - Two fuel additives are being tested to determine...Ch. 18.3 - Samples of starting annual salaries for...Ch. 18.3 - The gap between the earnings of men and women with...Ch. 18.3 - Are Southern and Western states equally prone to...Ch. 18.3 - Each year Bloomberg Businessweek publishes...Ch. 18.3 - Police records show the following numbers of daily...Ch. 18.3 - A certain brand of microwave oven was priced at 10...Ch. 18.3 - Chicago Midway International Airport and...Ch. 18.4 - A sample of 15 consumers provided the following...Ch. 18.4 - Three admission test preparation programs are...Ch. 18.4 - Forty-minute workouts of one of the following...Ch. 18.4 - The National Football League (NFL) holds its...Ch. 18.4 - A large corporation sends many of its first-level...Ch. 18.4 - The better-selling candies are often high in...Ch. 18.5 - Consider the following set of rankings for a...Ch. 18.5 - Prob. 33ECh. 18.5 - Prob. 34ECh. 18.5 - A national study by Harris Interactive, Inc.,...Ch. 18.5 - Prob. 36ECh. 18.5 - A student organization surveyed both current...Ch. 18 - A survey asked the following question: Do you...Ch. 18 - Due to a recent decline in the housing market, the...Ch. 18 - Twelve homemakers were asked to estimate the...Ch. 18 - Prob. 41SECh. 18 - The following data are product weights for the...Ch. 18 - A client wants to determine whether there is a...Ch. 18 - Prob. 44SECh. 18 - Prob. 45SECh. 18 - Prob. 46SECh. 18 - Prob. 47SE
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