1.In a normal situation, on average a song needs a duration of at most 3.5 minutes to be played. The duration of a random sample of 10 songs is taken and the data is as follows:

5.32 6.53 4.52 3.20 3.39 4.00 4.10 3.15 3.47 4.01

By using the data, do you agree with the statement that a song needs a duration of at most 3.5 minutes to be played at 5% level of significance.