In a recent year, 32.4% of recorded music sales were full-length CDs, 54.1% digital downloads, 10.5% singles, and the rest a mixture of other formats. A survey of college students and their recent music purchases indicated that out of 135 purchases, 63 were downloads, 48 were full-length CDs, 14 were singles, and the rest fit into the "other" category. At the 0.05 level of significance, is there sufficient evidence to conclude that at least one of the proportions differs from its original value?
In a recent year, 32.4% of recorded music sales were full-length CDs, 54.1% digital downloads, 10.5% singles, and the rest a mixture of other formats. A survey of college students and their recent music purchases indicated that out of 135 purchases, 63 were downloads, 48 were full-length CDs, 14 were singles, and the rest fit into the "other" category. At the 0.05 level of significance, is there sufficient evidence to conclude that at least one of the proportions differs from its original value?
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:In a recent year, 32.4% of recorded music sales were full-length CDs, 54.1% digital downloads, 10.5%
singles, and the rest a mixture of other formats. A survey of college students and their recent music
purchases indicated that out of 135 purchases, 63 were downloads, 48 were full-length CDs, 14 were
singles, and the rest fit into the "other" category. At the 0.05 level of significance, is there sufficient
evidence to conclude that at least one of the proportions differs from its original value?
USE MS EXCEL WITH INSTALLED MEGASTAT ADD-IN
a)
State what type of nonparametric test is to be used and explain why you chose such
State the null hypothesis.
b)
c) Show how data was placed in Excel.
d)
Show your results with the p-value boxed in red.
e) Show the rankings of your data (if applicable).
f)
Make a decision and give a conclusion.
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