14. Market researc Page 4 for a particular product. To accomplish this, the rese

Question

14. Market researc Page 4 for a particular product. To accomplish this, the researchers randommiyich brand anc 950 people who have purchased the product and ask them purchased. Two hundred and forty purchased the company'sband is contled researchers use these data to estimate the proportion of the market by the company. are to market share of a company researchers randomly select t which brand they A. z test for a single proportion B. t test for a single proportion C. z confidence interval for a single population mean D. z confidence interval for a single population proportion 15. A soft drink botling company wants to test to determine i bottling company wants to test to determine if their soft drink bottles actually contain, on average, one liter of soft drink. To conduct this test, they random sample 24 bottles and measure the fills. The value of ? is known. It is also known that the population is approximately normally distributed A. z confidence interval for a single population mean B. t test for single mean C. z confidence interval for the difference in two population means D. z test for single mean

Explanation / Answer

14. We are testing for population proportion so z confidence interval for single proportion will be used.

Option D is correct.

15. Option D is correct.

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