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2. A sample of 25 male customers who shopped at a supermarket showed that they spent an average of $78.00 with a standard deviation of $17.50. Another sample of 20 female customers who shopped at the same supermarket showed that they spent an average of $87.00 with a standard deviation of$14.40. Construct a 95% confidence interval estimate of the difference between the two population means. What conclusion can you make from the results?

2. A sample of 25 male customers who shopped at a supermarket showed that they spent an average of $78.00 with a standard deviation of $17.50. Another sample of 20 female customers who shopped at the same supermarket showed that they spent an average of $87.00 with a standard deviation of$14.40. Construct a 95% confidence interval estimate of the difference between the two population means. What conclusion can you make from the results?

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
Section10.4: Distributions Of Data
Problem 19PFA
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2. A sample of 25 male customers who shopped at a supermarket showed that they spent an average of $78.00 with a standard deviation of $17.50. Another sample of 20 female customers who shopped at the same supermarket showed that they spent an average of $87.00 with a standard deviation of$14.40. Construct a 95% confidence interval estimate of the difference between the two population means. What conclusion can you make from the results?
Transcribed Image Text:2. A sample of 25 male customers who shopped at a supermarket showed that they spent an average of $78.00 with a standard deviation of $17.50. Another sample of 20 female customers who shopped at the same supermarket showed that they spent an average of $87.00 with a standard deviation of$14.40. Construct a 95% confidence interval estimate of the difference between the two population means. What conclusion can you make from the results?
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