SCENARIO 12-13 Recent Studies Have Found That American Children Are More Obese

question 63

Multiple Choice

SCENARIO 12-13
Recent studies have found that American children are more obese than in the past. The amount of time children spent watching television has received much of the blame. A survey of 100 ten-yearolds revealed the following with regards to weights and average number of hours a day spent watching television. We are interested in testing whether the mean number of hours spent watching TV and weights are independent at 1% level of significance.
-Referring to Scenario 12-12,how many children in the survey spent less than 2 hours watching TV and no more than 2 hours reading storybooks on average?

• A)8
• B)130
• C)175
• D)687

---

Definitions:

Economic Prosperity

A state where individuals and societies enjoy high standards of living, demonstrating growth in wealth and resources.

Competitive Market Prices

Prices determined by the supply and demand in a market where many buyers and sellers exist and no single entity controls the market price.

Market Prices

The actual selling price of goods and services in a marketplace, determined by supply and demand dynamics.

Voluntary Exchange

An economic transaction where all parties involved agree to the trade, believing they will benefit from the exchange.