A company that has a 10% market share launches a marketing campaign. At the end
of the campaign period, the company conducts a survey in order to assess whether its
market share has increased. The result of the survey issued to 500 customers was 12.5%.
A. Write the null and alternative hypotheses.
b. What is the value of the test statistic?
c. What is the associated P-value?
d. State your conclusion using α = 0.05.

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The Answer of A company that has a 10% market share launches a marketing campaign. At the end
of the campaign period, the company conducts a survey in order to assess whether its
market share has increased. The result of the survey issued to 500 customers was 12.5%.
A. Write the null and alternative hypotheses.
b. What is the value of the test statistic?
c. What is the associated P-value?
d. State your conclusion using α = 0.05.

A Company That Has a 10% Market Share Launches a Marketing