EBK BUSINESS ANALYTICS
3rd Edition
ISBN: 9780135231906
Author: Evans
Publisher: VST
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Chapter 5, Problem 19PE
In the scenario in Problem 3, what is the
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Une Entreprise œuvrant dans le domaine du multividéo donne l'opportunité à ses
programmeurs-analystes d'évaluer la performance des cadres supérieurs.
Voici les résultats obtenues (sur une échelle de 10 à 50) où 50 représentent une
excellente performance. 10 programmeurs furent sélectionnés au hazard pour
évaluer deux cadres. Un rapport Excel est également fourni.
Programmeurs
Cadre A Cadre B
1
34
36
2
32
34
3
18
19
33
38
19
21
21
23
7
35
34
8
20
20
9
34
34
10
36
34
Test d'égalité des espérances: observations pairées
A television news channel samples 25 gas stations from its local area and uses the results to estimate the average gas price for the state. What’s wrong with its margin of error?
You’re fed up with keeping Fido locked inside, so you conduct a mail survey to find out people’s opinions on the new dog barking ordinance in a certain city. Of the 10,000 people who receive surveys, 1,000 respond, and only 80 are in favor of it. You calculate the margin of error to be 1.2 percent. Explain why this reported margin of error is misleading.
Chapter 5 Solutions
EBK BUSINESS ANALYTICS
Ch. 5 - Lauren drinks a variety of soft drinks. Over the...Ch. 5 - A home improvement company in Cincinnati ran a...Ch. 5 - Consider the experiment of drawing two cards...Ch. 5 - Three coins are drop on a table. List all possible...Ch. 5 - A market research company surveyed consumers to...Ch. 5 - Refer to the card scenario described in Problem 3....Ch. 5 - Refer to the coin scenario described in Problem 4....Ch. 5 - Prob. 8PECh. 5 - Prob. 9PECh. 5 - An airline tracks data on its flight arrivals....
Ch. 5 - A survey of 200 college graduates who have been...Ch. 5 - Prob. 12PECh. 5 - A survey of shopping habits found the percentage...Ch. 5 - A Canadian business school summarized the gender...Ch. 5 - Prob. 15PECh. 5 - Use the Civilian Labor Force data in the Excel...Ch. 5 - Prob. 17PECh. 5 - A home pregnancy test is not always accurate....Ch. 5 - In the scenario in Problem 3, what is the...Ch. 5 - In the roulette example described in Problem 8,...Ch. 5 - Prob. 21PECh. 5 - An investor estimates that there is a 1in10 chance...Ch. 5 - The weekly demand of a slow-moving product has the...Ch. 5 - Construct the probability distribution for the...Ch. 5 - Based on the data in the Excel file Consumer...Ch. 5 - A major application of analytics in marketing is...Ch. 5 - The Excel file Call Center Data shows that in a...Ch. 5 - If a cell phone company conducted a telemarketing...Ch. 5 - During one year, a particular mutual fund...Ch. 5 - A popular resort hotel has 300 rooms and is...Ch. 5 - A telephone call center where people place...Ch. 5 - A financial consultant has an average of eight...Ch. 5 - The number and frequency of Atlantic hurricanes...Ch. 5 - Prob. 34PECh. 5 - Prob. 35PECh. 5 - Prob. 36PECh. 5 - In determining automobile mileage ratings, it was...Ch. 5 - The distribution of SAT scores in math for an...Ch. 5 - A popular soft drink is sold in 2-liter...Ch. 5 - A supplier contract calls for a key dimension of a...Ch. 5 - Historical data show that customers who download...Ch. 5 - A lightbulb is warranted to last for 5,000 hours....Ch. 5 - The actual delivery time from Giodannis Pizza is...Ch. 5 - Apply the chi-square goodness of fit test to the...Ch. 5 - Apply the chi-square goodness of fit test to the...Ch. 5 - Compute the daily change of the closing price for...
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