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% the Second intern surveys auldts who dont regurlarly listen to mood music and those who do and asks them to rate ther mood on a 0 to 10 sclae the results are as follow People who dont listen to the mood music: 5, 8, 3, 5 ,4,6,5,7,7,1,2,6,4,5,8,2,8,10,2,4,6 people who do listen to the mood music: 4,5,6,8,3,8,6,5,4,7,7,5,8,9,2,10,8,8,5,4,7,6,8,9,4,4,3,8,10,4,7 the intern will only report it if she is 95% condfident it does so g) write H0,Ha and a h)using graphpad run the apropriate t test what is the p value j) generate 99% confidence interval regarding how much happier are people who listen to mood music. ROUND TO THE 0.1
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%
the Second intern surveys auldts who dont regurlarly listen to mood music and those who do and asks them to rate ther mood on a 0 to 10 sclae
the results are as follow
People who dont listen to the mood music: 5, 8, 3, 5 ,4,6,5,7,7,1,2,6,4,5,8,2,8,10,2,4,6
people who do listen to the mood music: 4,5,6,8,3,8,6,5,4,7,7,5,8,9,2,10,8,8,5,4,7,6,8,9,4,4,3,8,10,4,7
the intern will only report it if she is 95% condfident it does so
g) write H0,Ha and a
h)using graphpad run the apropriate t test what is the p value
j) generate 99% confidence interval regarding how much happier are people who listen to mood music. ROUND TO THE 0.1
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