Make Conclusions Based on Confidence Intervals

Multiple Choice

Make conclusions based on confidence intervals.
-A company that sells eco-friendly cleaning products is concerned that only 19.5% of
People who use such products select their brand. A marketing director suggests that the
Company invest in new advertising and labeling to strengthen its green image. The
Company decides to do so in a test market so that the effectiveness of the marketing
Campaign may be evaluated. Based on data collected in the test market, the company
Constructed a 98% confidence interval for the proportion of all consumers who might buy
Their brand. The resulting interval is 16% to 28%. What conclusion should the
Company reach about the new marketing campaign?

A) The data do not provide convincing evidence that the marketing campaign increases the percentage of customers for the company's products.
B) The data do provide convincing evidence that the marketing campaign increases the percentage of customers for the company's products.
C) The new marketing campaign is effective in increasing the percentage of customers buying their brand.
D) The company should launch the new marketing campaign.
E) None of the above.