Mathematics
a) Spreadsheet Data Analysis
b) State hypotheses:
Ho: Type of soft drink and resident are independent. (null hypothesis)
Ha: Type of soft drink and resident are not independent. (alternate hypothesis)
c) Conduct chi-square test of independence at 0.05 significance level: = 0.05
d) Calculate degrees of freedom: Number of rows = 2, Number of columns = 2
Degrees of freedom (df) = (Number of rows - 1) x (Number of columns - 1) = (2-1)(2-1) = 1
e) Calculate the expected frequencies from actual data:
f) Calculate the chi-square statistic using both actual and expected frequency tables:
In excel, the cursor was placed in cell M17 and the formula of chi test typed as:
=CHITEST (actual frequency range, expected frequency range)
=CHITEST (L4:M5, L13:M14), as shown in the formula bar above
The result gives, the calculated chi-square...
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