An experiment was conducted to determine whether giving candy to dining parties resulted in greater tips. The mean tip percentages and standard deviations are given in the accompanying table along with the sample sizes. Assume that the two samples are independent simple random No candy H1 33 18.13 Two candies H2 33 20.78 samples selected from normally distributed

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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An experiment was conducted to determine
whether giving candy to dining parties
resulted in greater tips. The mean tip
percentages and standard deviations are
given in the accompanying table along with
the sample sizes. Assume that the two
samples are independent simple random
samples selected from normallv distributed
No candy
Two candies H2
33
18.13
1.39
33
20.78 2.45
The test statistic, t, is - 5.40 . (Round to two decimal places as needed.)
The P-value is 0.000. (Round to three decimal places as needed.)
Transcribed Image Text:An experiment was conducted to determine whether giving candy to dining parties resulted in greater tips. The mean tip percentages and standard deviations are given in the accompanying table along with the sample sizes. Assume that the two samples are independent simple random samples selected from normallv distributed No candy Two candies H2 33 18.13 1.39 33 20.78 2.45 The test statistic, t, is - 5.40 . (Round to two decimal places as needed.) The P-value is 0.000. (Round to three decimal places as needed.)
An experiment was conducted to determine
whether giving candy to dining parties
resulted in greater tips. The mean tip
percentages and standard deviations are
given in the accompanying table along with
the sample sizes. Assume that the two
samples are independent simple random
samoles selected from normally distributed
No candy
H1
33
18.13
1.39
Two candies H2
33 20.78 2.45
giving candy does result in greater tips
b. Construct the confidence interval suitable for testing the claim in part (a).
Transcribed Image Text:An experiment was conducted to determine whether giving candy to dining parties resulted in greater tips. The mean tip percentages and standard deviations are given in the accompanying table along with the sample sizes. Assume that the two samples are independent simple random samoles selected from normally distributed No candy H1 33 18.13 1.39 Two candies H2 33 20.78 2.45 giving candy does result in greater tips b. Construct the confidence interval suitable for testing the claim in part (a).
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