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1. Do store-brand chocolate chip cookies have fewer chips per cookie than Keebler's Chips Deluxe Chocolate Chip Cookie? To find out, a student randomly selected 21 cookies of each brand and counted the number of chips in the cookies. The results are shown below. Keebler Store Brand 21 32 28 24 25 22 26 18 21 21 23 27 26 33 23 23 28 25 26 20 21 16 30 28 24 28 20 33 28 24 29 27 25 21 24 24 21 17 24 31 31 29

1. Do store-brand chocolate chip cookies have fewer chips per cookie than Keebler's Chips Deluxe Chocolate Chip Cookie? To find out, a student randomly selected 21 cookies of each brand and counted the number of chips in the cookies. The results are shown below. Keebler Store Brand 21 32 28 24 25 22 26 18 21 21 23 27 26 33 23 23 28 25 26 20 21 16 30 28 24 28 20 33 28 24 29 27 25 21 24 24 21 17 24 31 31 29

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.5: Interpreting Data
Problem 1C
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1. Do store-brand chocolate chip cookies have fewer chips per cookie than Keebler's Chips Deluxe Chocolate Chip Cookie? To find out, a student randomly selected 21 cookies of each brand and counted the number of chips in the cookies. The results are shown below. Keebler Store Brand 32 21 28 25 24 26 22 18 21 21 26 23 33 27 23 23 28 25 20 26 21 16 24 30 28 28 20 33 28 24 27 29 25 21 24 24 21 17 24 31 31 29 a. Use R or EXCEL to create histogram for each brand using 4 classes of equal width. (for both brands use 16 as the lower limit of the first class and width 5 so both histograms have the same scale). Discuss center, spread, and shape of the distribution of number of chips in the cookies. Make sure the graphs have appropriate title and labels. b. Use mean to discuss if there appear to be difference in the number of chips per cookie? Use standard deviation to discuss if one brand has more consistent number of chips per cookie? C.
Transcribed Image Text:1. Do store-brand chocolate chip cookies have fewer chips per cookie than Keebler's Chips Deluxe Chocolate Chip Cookie? To find out, a student randomly selected 21 cookies of each brand and counted the number of chips in the cookies. The results are shown below. Keebler Store Brand 32 21 28 25 24 26 22 18 21 21 26 23 33 27 23 23 28 25 20 26 21 16 24 30 28 28 20 33 28 24 27 29 25 21 24 24 21 17 24 31 31 29 a. Use R or EXCEL to create histogram for each brand using 4 classes of equal width. (for both brands use 16 as the lower limit of the first class and width 5 so both histograms have the same scale). Discuss center, spread, and shape of the distribution of number of chips in the cookies. Make sure the graphs have appropriate title and labels. b. Use mean to discuss if there appear to be difference in the number of chips per cookie? Use standard deviation to discuss if one brand has more consistent number of chips per cookie? C.
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