Question: A wedding caterer randomly selects clients from the past few years & records the months in which the wedding receptions were held. The results are listed below [based on data from The Amazing Almanac].
Month
|
Observed Frequency (O)
|
Expected Frequency (E)
|
January
|
5
|
9.167
|
February
|
8
|
9.167
|
March
|
6
|
9.167
|
April
|
8
|
9.167
|
May
|
11
|
9.167
|
June
|
14
|
9.167
|
July
|
10
|
9.167
|
August
|
9
|
9.167
|
September
|
10
|
9.167
|
October
|
12
|
9.167
|
November
|
8
|
9.167
|
December
|
9
|
9.167
|
TOTAL
|
110
|
110
|
[A] Is there sufficient evidence to reject the null hypothesis?
[B] According to your conclusion in step d, do the data provide significant evidence to conclude that weddings are held in different months with the same frequency?
[C] Use the values in the table above to fill in the following table, & calculate the test statistic, X20.05