Gen Combo Ll Statistical Techniques In Business And Economics; Connect Ac
17th Edition
ISBN: 9781260149623
Author: Lind
Publisher: MCG
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Chapter 12, Problem 37CE
To determine
Compare the average delivery times of the four different types of mail.
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The postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 weeks, 18 of
each type were mailed from the Network Distribution Center in Atlanta, Georgia, to Des Moines, Iowa. The total delivery time in d
was recorded. Minitab was used to perform the ANOVA. The results follow
Source
Factor
Error
Total
DE
3
68
71
55
MS
2.82 0.94 3.48 0.021
18.44 0.27
21.26
Level
Priority Mail Express
Priority Mail
First-Class Mail
Standard Mail
N Mean StDev
18 2.880
0.402
18 2.838
0.653
18
18
3.084
3.337
0.549
0.442
Using the ANOVA results, compare the average delivery times of the four different types of mail.
An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair for each of the four crashes were 404,414,459, and 203. Compute the mean, median, and mode cost of despair
An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair for each of the four crashes were
$400,
$427,
$459,
and
$204 .
Compute the mean, median, and mode cost of repair.
Chapter 12 Solutions
Gen Combo Ll Statistical Techniques In Business And Economics; Connect Ac
Ch. 12 - Steele Electric Products Inc. assembles cell...Ch. 12 - What is the critical F value when the sample size...Ch. 12 - Prob. 2ECh. 12 - Prob. 3ECh. 12 - Prob. 4ECh. 12 - Prob. 5ECh. 12 - Prob. 6ECh. 12 - Prob. 2SRCh. 12 - Prob. 7ECh. 12 - Prob. 8E
Ch. 12 - Prob. 9ECh. 12 - Prob. 10ECh. 12 - Prob. 3SRCh. 12 - Prob. 11ECh. 12 - The following are six observations collected from...Ch. 12 - Prob. 13ECh. 12 - Prob. 14ECh. 12 - Prob. 4SRCh. 12 - Prob. 15ECh. 12 - For exercises 15 and 16, conduct a test of...Ch. 12 - Prob. 17ECh. 12 - Prob. 18ECh. 12 - Prob. 5SRCh. 12 - Prob. 19ECh. 12 - Prob. 20ECh. 12 - Prob. 21ECh. 12 - Prob. 22ECh. 12 - Prob. 23CECh. 12 - Prob. 24CECh. 12 - Prob. 25CECh. 12 - Prob. 26CECh. 12 - In an ANOVA table, the MSE is equal to 10. Random...Ch. 12 - Prob. 28CECh. 12 - Prob. 29CECh. 12 - Prob. 30CECh. 12 - Prob. 31CECh. 12 - Prob. 32CECh. 12 - Prob. 33CECh. 12 - Prob. 34CECh. 12 - Prob. 35CECh. 12 - Prob. 36CECh. 12 - Prob. 37CECh. 12 - Prob. 38CECh. 12 - Shanks Inc., a nationwide advertising firm, wants...Ch. 12 - Prob. 40CECh. 12 - Prob. 41CECh. 12 - Prob. 42CECh. 12 - Prob. 43CECh. 12 - Prob. 44CECh. 12 - Prob. 45CECh. 12 - Prob. 46CECh. 12 - Prob. 47CECh. 12 - Prob. 48CECh. 12 - Prob. 50DACh. 12 - Prob. 51DACh. 12 - Prob. 1PCh. 12 - Prob. 2PCh. 12 - Prob. 3PCh. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - Prob. 7PCh. 12 - Prob. 1CCh. 12 - Prob. 2CCh. 12 - Prob. 1.1PTCh. 12 - The likelihood of rejecting a true null hypothesis...Ch. 12 - Prob. 1.3PTCh. 12 - Prob. 1.4PTCh. 12 - Prob. 1.5PTCh. 12 - Prob. 1.6PTCh. 12 - In a two-tailed test, the rejection region is...Ch. 12 - Prob. 1.8PTCh. 12 - Prob. 1.9PTCh. 12 - Prob. 1.10PTCh. 12 - Prob. 2.1PTCh. 12 - Prob. 2.2PTCh. 12 - Prob. 2.3PT
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- What is a sample space?arrow_forwardThe postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 weeks, 18 of each type were mailed from the Network Distribution Center in Atlanta, Georgia, to Des Moines, Iowa. The total delivery time in days was recorded. Minitab was used to perform the ANOVA. The results follow: Source DF SS MS F P Factor 3 2.41 0.80 2.50 0.067 Error 68 21.58 0.32 Total 71 23.99 Level N Mean StDev Priority Mail Express 18 2.833 0.530 Priority Mail 18 3.350 0.788 First-Class Mail 18 3.099 0.450 Standard Mail 18 3.079 0.406 Using the ANOVA results, compare the average delivery times of the four different types of mail.a. Identify the null hypothesis and the alternate hypothesis.Null hypothesis: H0: μ1 ≠ μ2 ≠ μ3 ≠ μ4 H0: μ1 = μ2 = μ3 = μ4 multiple choice 1 a b Alternate hypothesis:multiple choice 2 H1: At least one mean is different. H1: All means are equal. b.…arrow_forwardAn apple orchard's workers pick 12,500 apples in the month of October. A sample of 300 of these apples shows that 15 of them are damaged and bruised. What is the best estimate of the percent of apples picked at the orchard in October that are bruised and damaged?arrow_forward
- A Chinese cell-phone manufacturer exclusively uses robots in one of its factories. A random test run results in 23 defective assemblies out of 500. Does this data suggest that the true percentage of defectives is less than 5%? Use NATDRC.arrow_forwardThe postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 weeks, 18 of each type were mailed from the Network Distribution Center in Atlanta, Georgia, to Des Moines, Iowa. The total delivery time in days was recorded. Minitab was used to perform the ANOVA. The results follow: Source DF SS MS F P Factor 3 2.45 0.82 2.93 0.040 Error 68 19.11 0.28 Total 71 21.56 Level N Mean StDev Priority Mail Express 18 2.959 0.397 Priority Mail 18 3.466 0.714 First-Class Mail 18 3.163 0.606 Standard Mail 18 3.106 0.300 b. What is the decision rule? Use the 0.05 significance level. (Round your answer to 2 decimal places.) Reject Ho if F> _________arrow_forwardThe postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 weeks, 18 of each type were mailed from the Network Distribution Center in Atlanta, Georgia, to Des Moines, Iowa. The total delivery time in days was recorded. Minitab was used to perform the ANOVA. The results follow: Source DF SS MS F P Factor 3 2.91 0.97 3.73 0.015 Error 68 17.36 0.26 Total 71 20.27 Level N Mean StDev Priority Mail Express 18 2.917 0.427 Priority Mail 18 2.941 0.741 First-Class Mail 18 3.402 0.440 Standard Mail 18 3.215 0.311 Using the ANOVA results, compare the average delivery times of the four different types of mail. Identify the null hypothesis and the alternate hypothesis. Null hypothesis: H0: μ1 ≠ μ2 ≠ μ3 ≠ μ4 H0: μ1 = μ2 = μ3 = μ4 a b Alternate hypothesis: H1: At least one mean is different. H1: All means are equal.…arrow_forward
- Hurricane Andrew swept through southern Florida causing billions of dollars of damage. Because of the severity of the storm and the type of residential construction used in this semitropical area, there was some concern that the average claim size would be greater than the historical average hurricane claim of $23,000$23,000. Several insurance companies collaborated in a data gathering experiment. They randomly selected 2222 homes and sent adjusters to settle the claims. In the sample of 2222 homes, the average claim was $24,500$24,500 with a population standard deviation of $4100$4100. Is there sufficient evidence at a 0.010.01 significance level to support the claim that the home damage is greater than the historical average? Assume the population of insurance claims is approximately normally distributed. Compute the value of the test statistic. Round your answer to two decimal places.arrow_forwardIt’s assumed that students need to stay awake more to study during finals week. One way to measure this is how much coffee is consumed during Finals week at night. A local coffee house near APU counted the number of cups of coffee sold per hour during Finals week after 6 p.m. We randomly select ten (10) hours of sales records during Finals week and find out that the following number of cups of coffee were consumed: 18, 17, 22, 14, 17, 20, 22, 24, 15, 15 By comparison, the sales records from a previous week were used as a comparison. The following number of cups of coffee were consumed over a seven (7) hour period: 9, 13, 5, 15, 17, 10, 11 a. Determine what is the appropriate statistical procedure, with a brief explanation (one sentence) as to why this is the appropriate procedure. b. State the null hypothesis. c. Execute the proper calculations with the appropriate procedures. d. Present a graph when appropriate of your results. e. Include any appropriate post-hoc tests. f. State…arrow_forwardAn oil company conducts a geological study that indicates that an exploratory oil well should have a 20% chance of striking oil. What is the mean number of oil wells that must be drilled if the company wants to have five oil-striking wells?arrow_forward
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