A Surprising Fact: Only 56% of All Teens Use a Password

question 13

Multiple Choice

A surprising fact: only 56% of all teens use a password on their mobile device. If a poll chooses a simple random sample of 1000 teens and asks if they use a password on their mobile device, the percent who say "Yes" will vary if the sample is repeated. In fact, the percent "Yes" in many samples will follow a normal distribution with mean 56% and standard deviation 1.6%.
The variation from sample to sample, when the poll is repeated, is described by the standard deviation (1.6 percent) . We would like this variation to be small so that repeated polls give almost the same result. To reduce the standard deviation, we could:

• A) use a simple random sample of size less than 1,000.
• B) use a simple random sample of size greater than 1,000.
• C) use a confidence level less than 95 percent.
• D) use a confidence level greater than 95 percent.
• E) use a simple random sample of size greater than 1,000, and use a confidence level less than 95 percent.

Understand the various methods used by small businesses to gather primary data.

Recognize the primary purpose of marketing research in the business context.

Understand the steps involved in the consumer purchase decision-making process.

Identify the advantages and disadvantages of small and large businesses in customer contact.

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Improperly Filed

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