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A restaurant chain claims that it serves its customers in exactly 15 minutes after an order is placed. However, customers from one of its outlets

A restaurant chain claims that it serves its customers in exactly 15 minutes after an order is placed. However, customers from one of its outlets have been complaining that this is not true. Therefore, the COO of the chain decides to visit the outlet. He managed to measure the exact time taken to serve 45 customers. The data that he collected is given below.

Customer# Time taken (Min)

1 15.8

2 15.31

3 14.84

4 15.75

5 14.26

6 15.2

7 15.12

8 15.39

9 13.31

10 13.19

11 14.89

12 15.42

13 15.49

14 14.77

15 13.45

16 15.18

17 14.36

18 15.35

19 14.47

20 17.01

21 14.65

22 15.58

23 14.78

24 15.82

25 15.77

26 14.73

27 16.65

28 14.83

29 14.68

30 15.15

31 16.52

32 14.35

33 15.9

34 15.95

35 15.84

36 13.59

37 15.1

38 15.33

39 15.48

40 16.66

41 15.59

42 15.85

43 14.82

44 16.08

45 16.95

What will your null hypothesis be?

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