A telephone company claims that the service calls which they receive are equally distributed among the five working days of the week. A survey of 91

91 randomly selected service calls was conducted. Is there enough evidence to refute the telephone company's claim that the number of service calls does not change from day-to-day?

Days of the WeekMonTueWedThuFriNumber of Calls24

2422

2218

1819

198

8

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Step3of10:State the null and alternative hypothesis in terms of the expected proportions for each category.