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Mistakes in a Song A random sample of six music students played a short song, and the number of mistakes in music each student made was recorded. After they practiced the song 5 times, the number of mistakes each student made was recorded. The data are shown. At a = 0.01, can it be concluded that there was a decrease in the mean number of mistakes? Assume that all variables are normally or approximately normally distributed. Let u, be the mean before and Un= H,-,. Student C D E Before 13 10 11 14 13 After 3. 13 10 8. 12 12

Mistakes in a Song A random sample of six music students played a short song, and the number of mistakes in music each student made was recorded. After they practiced the song 5 times, the number of mistakes each student made was recorded. The data are shown. At a = 0.01, can it be concluded that there was a decrease in the mean number of mistakes? Assume that all variables are normally or approximately normally distributed. Let u, be the mean before and Un= H,-,. Student C D E Before 13 10 11 14 13 After 3. 13 10 8. 12 12

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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Find the p-value
9.3 Section Exercs8 Mistakes in a Song A random sample of six music students played a short song, and the number of mistakes in music each student made was recorded. After they practiced the song 5 times, the number of mistakes each student made was recorded. The data are shown. At a=0.01, can it be concluded that there was a decrease in the mean number of mistakes? Assume that all variables are normally or approximately normally distributed. Let µ, be the mean before and Un = µ, -µ,. Student A C D E F Before 13 10 11 14 13 After 12 3 13 10 8 12 Send data to Excel Save For Later Submit Assignment Skip Part Check Answer II
Transcribed Image Text:9.3 Section Exercs8 Mistakes in a Song A random sample of six music students played a short song, and the number of mistakes in music each student made was recorded. After they practiced the song 5 times, the number of mistakes each student made was recorded. The data are shown. At a=0.01, can it be concluded that there was a decrease in the mean number of mistakes? Assume that all variables are normally or approximately normally distributed. Let µ, be the mean before and Un = µ, -µ,. Student A C D E F Before 13 10 11 14 13 After 12 3 13 10 8 12 Send data to Excel Save For Later Submit Assignment Skip Part Check Answer II
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