Question: Using the confidence interval approach, determine the sample size required for the following scenario: A cosmetic company is conducting research to determine the best medium

Using the confidence interval approach, determine the sample size required for the following scenario:

A cosmetic company is conducting research to determine the best medium to air their advertising.The local region they are interested in has a female population (their target market) of 15,000.They would like to run a study to determine how many minutes of television per day that females in this region typically watch.A study conducted for a similar region in another part of the country found that females watch 240 minutes per day, with a standard deviation of 40.They would like to run a study using a confidence interval of 90% and with an accuracy value of 5.

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