Chi-square GOF test for a uniform distribution
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Ages of 56 attendees of a Harry Potter movie are shown. (a) Form seven age classes (10 to 20, 20 to 30, etc.). Tabulate the frequency of attendees in each class. (b) Calculate expected frequencies for each class. (c) Perform a chi-square GOF test for a uniform distribution, using the 5 percent level of significance.
10 22 58 11 73 22 57
35 33 33 59 54 55 75
79 24 13 73 52 69 30
71 64 17 50 72 67 50
72 35 26 59 47 65 35
64 34 39 66 37 41 58
51 43 29 74 73 50 62
58 34 50 27 13 67 67
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