Ann Day Wishes to Determine If the Mean Price of Grocery

question 118

Essay

Ann Day wishes to determine if the mean price of grocery items is the same for five supermarkets in her city. The same seven food (and brand) items were priced at the five stores. Complete the partial ANOVA table below for testing the null hypothesis of no difference in the true mean price for the five stores in a completely randomized design. Can you reject the null hypothesis? Use = 0.05.

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Definitions:

Rationalize Denominator

The process of eliminating a square root or imaginary number from the denominator of a fraction.

Square Root

A quantity which, when squared, returns the original number.

Rationalize Denominator

The process of eliminating radicals or complex numbers from the denominator of an algebraic fraction by multiplying both the numerator and the denominator by a suitable value.

Cube Root

The value that when multiplied by itself three times gives the original number.