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2) The manager of the cosmetics section of a large department store wants to determine whether newspaper advertising really does affect sales. For her experiment, she randomly selects 15 items currently in stock and proceeds to establish a baseline. The 15 items are priced at their usual competitive values, and the quantity of each item sold for a 1-week period is recorded. Then, without changing their price, she places a large ad in the newspaper, advertising the 15 items. She records the quantity sold for a 1-week period. The results are as follow: Item No. of Sold Before Ad No. of Sold After Ad 25 32 18 24 3 4 42 40 16 19 6. 20 25 7. 23 23 32 35 60 65 10 40 43 11 27 28 12 11 13 13 12 14 23 32 15 16 28 Using a - 0.052 tail, what can you conclude?

2) The manager of the cosmetics section of a large department store wants to determine whether newspaper advertising really does affect sales. For her experiment, she randomly selects 15 items currently in stock and proceeds to establish a baseline. The 15 items are priced at their usual competitive values, and the quantity of each item sold for a 1-week period is recorded. Then, without changing their price, she places a large ad in the newspaper, advertising the 15 items. She records the quantity sold for a 1-week period. The results are as follow: Item No. of Sold Before Ad No. of Sold After Ad 25 32 18 24 3 4 42 40 16 19 6. 20 25 7. 23 23 32 35 60 65 10 40 43 11 27 28 12 11 13 13 12 14 23 32 15 16 28 Using a - 0.052 tail, what can you conclude?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 27PPS
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2) The manager of the cosmetics section of a large department store wants to determine whether newspaper advertising really does affect sales. For her experiment, she randomly selects 15 items currently in stock and proceeds to establish a baseline. The 15 items are priced at their usual competitive values, and the quantity of each item sold for a 1-week period is recorded. Then, without changing their price, she places a large ad in the newspaper, advertising the 15 items. She records the quantity sold for a 1-week period. The results are as follow: Item No. of Sold Before Ad No. of Sold After Ad 1. 25 32 18 24 3 7 4 42 40 16 19 6. 20 25 7 23 23 32 35 60 65 10 40 43 11 27 28 12 7 11 13 13 12 14 23 32 15 16 28 Using a - 0.052 tail , what can you conclude?
Transcribed Image Text:2) The manager of the cosmetics section of a large department store wants to determine whether newspaper advertising really does affect sales. For her experiment, she randomly selects 15 items currently in stock and proceeds to establish a baseline. The 15 items are priced at their usual competitive values, and the quantity of each item sold for a 1-week period is recorded. Then, without changing their price, she places a large ad in the newspaper, advertising the 15 items. She records the quantity sold for a 1-week period. The results are as follow: Item No. of Sold Before Ad No. of Sold After Ad 1. 25 32 18 24 3 7 4 42 40 16 19 6. 20 25 7 23 23 32 35 60 65 10 40 43 11 27 28 12 7 11 13 13 12 14 23 32 15 16 28 Using a - 0.052 tail , what can you conclude?
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