Helena gathers data about the music preferences of users of a social media application. She gathers information on music events (MEs). In her study, a music event is defined as a posting that has a hashtag or is linked to other video- sharing websites. 1. From her data, Helena claims that about 15% of MEs on the application are hip hop/rap. Juan wants more proof of her claim. • Juan uses technology to determine the genres of music of 100 MEs he chooses at random. He determines that 9 were hip hop/rap. • Juan points out the 9% rate to Helena. Part A Assume Helena is correct and 15% of MEs on the app are hip hop/rap. Use random numbers and a simulated sampling distribution to simulate the outcome of several trials, in which each trial samples 100 MEs from the app data. your and counts the number of hip hop/rap MEs. Make a histogram for Is the model consistent with what you would expect? Explain.
Helena gathers data about the music preferences of users of a social media application. She gathers information on music events (MEs). In her study, a music event is defined as a posting that has a hashtag or is linked to other video- sharing websites. 1. From her data, Helena claims that about 15% of MEs on the application are hip hop/rap. Juan wants more proof of her claim. • Juan uses technology to determine the genres of music of 100 MEs he chooses at random. He determines that 9 were hip hop/rap. • Juan points out the 9% rate to Helena. Part A Assume Helena is correct and 15% of MEs on the app are hip hop/rap. Use random numbers and a simulated sampling distribution to simulate the outcome of several trials, in which each trial samples 100 MEs from the app data. your and counts the number of hip hop/rap MEs. Make a histogram for Is the model consistent with what you would expect? Explain.
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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Question

Transcribed Image Text:2. The application claims that 30% (0.30) of the MEs are pop music. Helena does
50 trials in which she selects 100 MEs at random. She determines that 25 out
of every 100 MEs are pop music, with a standard deviation among the trials of
about 5 MEs. Does Helena's research provide strong evidence that the social
media app's claim of 30% pop music MEs is false? Explain.

Transcribed Image Text:Helena gathers data about the music preferences of users of a social media
application. She gathers information on music events (MEs). In her study, a
music event is defined as a posting that has a hashtag or is linked to other video-
sharing websites.
1. From her data, Helena claims that about 15% of MEs on the application are
hip hop/rap. Juan wants more proof of her claim.
• Juan uses technology to determine the genres of music of 100 MEs he
chooses at random. He determines that 9 were hip hop/rap.
• Juan points out the 9% rate to Helena.
Part A
Assume Helena is correct and 15% of MEs on the app are hip hop/rap.
Use random numbers and a simulated sampling distribution to simulate the
outcome of several trials, in which each trial samples 100 MEs from the app
and counts the number of hip hop/rap MEs. Make a histogram for your data.
Is the model consistent with what you would expect? Explain.
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