something other than 14 minutes? Use a =0.01. C 5ん 6) A music industry professional claims that the average amount of money that an average teenager spends per month on music is at least $50. Based...

Extracted text: something other than 14 minutes? Use a =0.01. C 5ん 6) A music industry professional claims that the average amount of money that an average teenager spends per month on music is at least $50. Based upon previous research, the population standard deviation is estimated to be $12.42, The music professional surveys 20 students and finds that the mean spending is $47.77. Is there evidence that the average amount spent by students is less than $50?