Listening to music has long been thought to enhance intelligence, especially during infancy and childhood ...

Listening to music has long been thought to enhance intelligence, especially during infancy and childhood. To test whether this is true, a researcher records the number of hours that eight high-performance students listened to music per day for 1 week. The data are listed in the table. Music Listening per Day (in hours) 4.3 5.6 4.2 4.5 4.3 4.9 5.1 3.9 a) Find the confidence limits at a 95% CI for this sample. b) Suppose the null hypothesis states that students listen to 3.5 hours of music per day. What would the decision be for a two-tailed hypothesis test at a .05 level of significance?