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

question 15

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%.
Which of these ranges of outcomes contains 95 percent of all the results of a large number of polls of 1,000 teens?

• A) 56 to 100 percent
• B) 54.4 to 57.6 percent
• C) 52.8 to 59.2 percent
• D) 51.2 to 60.8 percent

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Definitions:

Well-Developed Societies

Societies that exhibit robust economic growth, advanced infrastructure, and a high level of social welfare.

Welfare Reform

Changes in the public assistance system aiming to improve the management and delivery of welfare benefits, often with the goal of encouraging employment among beneficiaries.

Welfare Recipients

Individuals or households that receive assistance from government programs designed to aid those in financial need, often including help with food, housing, and healthcare.

Poverty

The state of having insufficient financial resources or income to meet basic needs such as food, shelter, and clothing, resulting in a lower standard of living.