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Market sales data from last year showed that for a particular product Brand A captured 30% of the market, Brand B captured 20% of the market, and...


Market sales data from last year showed that for a particular product Brand A captured 30% of the market, Brand B captured 20% of the market, and Brand C captured 50% of the market. A new and improved version of Brand B was introduced to the market this year and has been selling for several months. A sample of 200 consumers who purchased this product since the introduction of the new Brand B version was surveyed to determine if they purchased Brand A, Brand B, or Brand C. The data is displayed in the table below. 

Brand

Observed Count

A

65

B

55

C

80

 

Reference: Ref 9-10


The P-value for this test is 0.007. From this, we should: 

(A)do not reject H0 and conclude the proportions of consumers purchasing Brand A, Brand B, and Brand C have changed.

(B)reject H0 and conclude the proportions of consumers purchasing Brand A, Brand B, and Brand C have changed.

(C)reject H0 and conclude the proportions of consumers purchasing Brand A, Brand B, and Brand C have not changed.

(D)do not reject H0 and conclude the proportions of consumers purchasing Brand A, Brand B, and Brand C have not changed.


This assignment is tough

Top Answer

(B)reject H0 and conclude the proportions... View the full answer

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