Q4.

The time required for 50 different employees to compute and record the number of hours worked during the week was measured, with the following results in minutes: Employee Time Employee Time (minutes) (minutes) 1.88 26 0.04 0.54 27 1.49 1.90 28 0.66 0.15 29 2.03 DO -JOUAWNG 0.02 30 1.00 2.81 31 0.39 1.50 32 0.34 0.53 33 0.01 2.62 34 0.10 10 2.67 35 1.10 11 3.53 36 0.24 12 0.53 37 0.26 13 1.80 38 0.45 14 0.79 39 0.17 15 0.21 40 4.29 16 0.80 41 0.80 17 0.26 42 5.50 18 0.63 43 4.91 19 0.36 44 0.35 20 2.03 45 0.36 21 1.42 46 0.90 22 1.28 47 1.03 23 0.82 48 1.73 24 2.16 49 0.38 25 0.05 50 0.48 Use the chi-square test (as in Example 18) to test the hypothesis that these service times are exponentially distributed. Let the number of class intervals bek = 6. Use the level of significance a = 0.05