A local newspaper reported that polytechnic students spend on the average about 21 hours on co-curricular activities (CCAs), clubs, and interest groups per week.A teacher in a local polytechnic wanted to find out how much time the students at his polytechnic is spending per week on such activities. The teacher selected a random sample of 40 students and their number of hours spend on such activities per week were recorded. student cca_hours 1 22.8 2 21.3 3 23.2 4 25.3 5 21.1 6 21.1 7 25.4 8 23.5 9 20.5 10 22.9 11 20.5 12 20.5 13 22.2 14 17 15 17.5 16 20.3 17 19.2 18 22.4 19 19.4 20 18.2 21 25.2 22 21.1 23 21.8 24 18.2 25 20.3 26 21.9 27 18.8 28 22.5 29 20.2 30 20.9 31 20.2 32 26.1 33 21.6 34 19.1 35 23.6 36 18.7 37 22.1 38 16.9 39 18.4 40 22.1 For the above sample, what is the probability of a Type II error if the real mean µ = 22?