After reviewing the video refer to the discussion question below and answer the questions:
A department store, A, has four competitors: B,C,D, and E. Store A hires a
consultant to determine if the percentage of shoppers who prefer each of the five stores
is the same. A survey of 1100 randomly selected shoppers is conducted, and the results
about which one of the stores shoppers prefer are below. Is there enough evidence using a
significance level = 0.05 to conclude that the proportions are really the same?
StoreABCDE
Number of Shopers262234204190210
1) Identify null and the alternative hypothesis, H0 and H1.
2) Use StatCrunch to find the test statistic and the P-value.
StatCrunch – Chi Square (Links to an external site.)
3. Find the degrees of freedom.
4. Compare the P-value to the significance level alpha.
5. Find the critical value using the Chi square Table (Links to an external site.). Tutorial using the table. (Links to an external site.)
Find the critical value using StatCrunch. (Links to an external site.)
6. Is there enough evidence using a significance level = 0.05 to conclude that the proportions are really the same?
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