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 18.3, Problem 18E
Two fuel additives are being tested to determine their effect on gasoline mileage. Seven cars were tested with additive 1 and nine cars were tested with additive 2. The following data show the miles per gallon obtained with the two additives. Use α = .05 and the MWW test to see whether there is a significant difference between gasoline mileage for the two additives.
| Additive 1 | Additive 2 |
| 17.3 | 18.7 |
| 18.4 | 17.8 |
| 19.1 | 21.3 |
| 16.7 | 21.0 |
| 18.2 | 22.1 |
| 18.6 | 18.7 |
| 17.5 | 19.8 |
| 20.7 | |
| 20.2 |
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The following are the cystatin C levels (mg/L) for the patients described in Exercise 15 (A-17).Cystatin C is a cationic basic protein that was investigated for its relationship to GFR levels. Inaddition, creatinine levels are also given. (Note: Some subjects were measured more than once.)Cystatin C (mg/L) Creatinine (mmol/L)1.78 4.69 0.35 0.142.16 3.78 0.30 0.111.82 2.24 0.20 0.091.86 4.93 0.17 0.121.75 2.71 0.15 0.071.83 1.76 0.13 0.122.49 2.62 0.14 0.111.69 2.61 0.12 0.071.85 3.65 0.24 0.101.76 2.36 0.16 0.131.25 3.25 0.17 0.091.50 2.01 0.11 0.122.06 2.51 0.12 0.062.34Source: Data provided courtesy of D. M. Z. Krieser, M.D.(a) For each variable, compute the mean, median, variance, standard deviation, and coefficient ofvariation.(b) For each variable, construct a stem-and-leaf display and a box-and-whisker plot.(c) Which set of measurements is more variable, cystatin C or creatinine? On what do you base youranswer?
5 and 6. The following data was collected from 1 bag of Hershey Kisses®. Each Kiss® was weighed in grams with the wrapper and recorded in the table below. Hershey claims that there are 368 grams of chocolate in one bag.
Hershey Kiss Weights in Grams
4.76
4.72
4.74
4.55
4.91
4.74
4.78
4.71
4.80
4.78
4.78
4.75
4.79
4.82
4.91
4.83
4.68
4.74
4.70
4.80
4.70
4.76
4.70
4.83
4.93
4.74
4.84
4.82
4.76
4.77
4.72
4.78
4.83
4.75
4.74
4.68
4.84
4.71
4.71
4.76
4.66
4.78
4.73
4.74
4.92
4.77
4.80
4.79
4.86
4.64
4.78
4.70
4.75
4.78
4.76
4.83
4.66
4.77
4.83
4.78
4.69
4.81
4.68
4.78
4.88
4.72
4.85
4.85
4.81
4.74
4.80
4.82
4.84
4.70
4.85
4.70
4.81
4.72
4.79
4.73
4.61
Based on Hershey's® claim for 368 total net grams of chocolate in the bag, approximately how many Kisses® too many or too few are there? Assume that the Kisses® were weighed with the wrapper, each wrapper weighs 0.12 grams, and the net grams listed on the bag are for the chocolate only. Give some possible…
7 and 8.
The following data was collected from 1 bag of Hershey Kisses®. Each Kiss® was weighed in grams with the wrapper and recorded in the table below. Hershey claims that there are 368 grams of chocolate in one bag.
Hershey Kiss Weights in Grams
4.76
4.72
4.74
4.55
4.91
4.74
4.78
4.71
4.80
4.78
4.78
4.75
4.79
4.82
4.91
4.83
4.68
4.74
4.70
4.80
4.70
4.76
4.70
4.83
4.93
4.74
4.84
4.82
4.76
4.77
4.72
4.78
4.83
4.75
4.74
4.68
4.84
4.71
4.71
4.76
4.66
4.78
4.73
4.74
4.92
4.77
4.80
4.79
4.86
4.64
4.78
4.70
4.75
4.78
4.76
4.83
4.66
4.77
4.83
4.78
4.69
4.81
4.68
4.78
4.88
4.72
4.85
4.85
4.81
4.74
4.80
4.82
4.84
4.70
4.85
4.70
4.81
4.72
4.79
4.73
4.61
Describe the distribution of Kisses®. Make sure to include descriptions of the shape, center, spread, and outliers, if there are any.
In general, each Kiss® is approximately how many grams? Explain what measure you used and why.
Chapter 18 Solutions
Bundle: Statistics for Business & Economics, Loose-Leaf Version, 13th + MindTap Business Statistics with XLSTAT, 1 term (6 months) Printed Access Card
Ch. 18.1 - The following hypothesis test is to be conducted....Ch. 18.1 - Ten individuals participated in a taste test...Ch. 18.1 - The median number of part-time employees at...Ch. 18.1 - Net assets for the 50 largest stock mutual funds...Ch. 18.1 - The median price of homes in Austin, Texas is...Ch. 18.1 - The median annual income for families living in...Ch. 18.1 - Prob. 7ECh. 18.1 - A Pew Research Center survey asked adults if their...Ch. 18.1 - In a recent poll six hundred adults were asked a...Ch. 18.1 - Nielsen Media Research identified Empire and the...
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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