A company produces mood music, and wants to study the music and whther it substantially helps peoples mood. the first intern decides to survey adults, asking them if they are feeling cheerful at the moment. 280 adults who do not listen to the mood music are asked if they are feeling cheerful at the moment. 112 say they are. the intern then asks 172 adults who listen to mood music regurlarly of they are feeling cheerful: 87 say they are. The intern will only claim that the music enhances peoples mood if he can state with 95% certainty that the % of adult mood music listeners who feel cherful beats thes rest of the adult population more than 4% a) Write h0, Ha and a b) write the values of P no music and P music c)run a z test what is the p-value round to the nearest 0.0001
A company produces mood music, and wants to study the music and whther it substantially helps peoples mood. the first intern decides to survey adults, asking them if they are feeling cheerful at the moment. 280 adults who do not listen to the mood music are asked if they are feeling cheerful at the moment. 112 say they are. the intern then asks 172 adults who listen to mood music regurlarly of they are feeling cheerful: 87 say they are. The intern will only claim that the music enhances peoples mood if he can state with 95% certainty that the % of adult mood music listeners who feel cherful beats thes rest of the adult population more than 4% a) Write h0, Ha and a b) write the values of P no music and P music c)run a z test what is the p-value round to the nearest 0.0001
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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A company produces mood music, and wants to study the music and whther it substantially helps peoples mood.
the first intern decides to survey adults, asking them if they are feeling cheerful at the moment. 280 adults who do not listen to the mood music are asked if they are feeling cheerful at the moment. 112 say they are. the intern then asks 172 adults who listen to mood music regurlarly of they are feeling cheerful: 87 say they are. The intern will only claim that the music enhances peoples mood if he can state with 95% certainty that the % of adult mood music listeners who feel cherful beats thes rest of the adult population more than 4%
a) Write h0, Ha and a
b) write the values of P no music and P music
c)run a z test what is the p-value round to the nearest 0.0001
Transcribed Image Text:Part 2: A company produces mood music, and wants to study the music and whether it
"substantially" helps people's mood.
The first intern decides to survey adults, asking them if they are feeling cheerful at the moment.
280 adults who do not listen to the mood music are asked if they are feeling cheerful at the
moment. 112 say they are. The intern then asks 172 adults who listen to mood music regularly
if they are feeling cheerful; 87 say they are. The intern will only claim that the music enhances
people's mood if he can state with 95% certainty that the % of adult mood-music listeners who
feel cheerful beats the rest of the adult population more than 4%.
a)Write Ho, HA, and a.
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