3. The promoter of a touring dance show wishes to analyse how the price per ticket affects the size of its audiences. She tests two prices, K40 and K50, over 11 shows each which give rise to the following attendances. Price K40 21 22 28 27 20 23 26 32 25 21 30 K50 19 18 38 33 24 39 22 20 28 26 30 (a) Enter the data into your calculator, and calculate the mean and standard deviation of the attendance for each sample. (b) Perform a statistical test to determine whether the variances of the attendance are equal under the two prices. (c) Perform a t-test to determine whether the mean attendance is the same under the two prices.
3. The promoter of a touring dance show wishes to analyse how the price per ticket affects the size of its audiences. She tests two prices, K40 and K50, over 11 shows each which give rise to the following attendances. Price K40 21 22 28 27 20 23 26 32 25 21 30 K50 19 18 38 33 24 39 22 20 28 26 30 (a) Enter the data into your calculator, and calculate the mean and standard deviation of the attendance for each sample. (b) Perform a statistical test to determine whether the variances of the attendance are equal under the two prices. (c) Perform a t-test to determine whether the mean attendance is the same under the two prices.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:3. The promoter of a touring dance show wishes to analyse how the price per ticket affects
the size of its audiences. She tests two prices, K40 and K50, over 11 shows each which
give rise to the following attendances.
Price
K40
21 22 28 27 20 23 26 32 25 21 30
K50 19 18 38 33 24 39 22 20 28 26 30
(a) Enter the data into your calculator, and calculate the mean and standard deviation
of the attendance for each sample.
(b) Perform a statistical test to determine whether the variances of the attendance are
equal under the two prices.
(c) Perform a t-test to determine whether the mean attendance is the same under the
two prices.
(d) Calculate a 95% confidence interval for the difference between the mean show rev-
enue under each price.
(e) Without doing any further calculations, comment on which price the promoter
should choose.
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