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

question 13

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-year-
olds 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 12-13, suppose the value of the test statistic was 30.00 (which is not the correct value) and the critical value at 1% level of significance was 10.00 (which is not the
Correct value) , which of the following conclusions would be correct?

• A) We will not reject the null and conclude that mean number of hours spent watching TV and weights are independent.
• B) We will reject the null and conclude that mean number of hours spent watching TV and weights are independent.
• C) We will not reject the null and conclude that mean number of hours spent watching TV and weights are not independent.
• D) We will reject the null and conclude that mean number of hours spent watching TV and weights are not independent.

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Definitions:

Fungi

A kingdom of spore-producing organisms that feed on organic matter, including molds, yeast, mushrooms, and toadstools.

Atmospheric Nitrogen

The form of nitrogen gas (N2) that makes up a major portion of the Earth's atmosphere, largely inert and not directly usable by most living organisms.

Gladiolus

A genus of perennial flowering plants in the iris family known for its sword-shaped leaves and colorful flower spikes, popular in gardens and floral arrangements.

Stolon

Stem that grows horizontally along the ground and may give rise to new plants where it contacts the soil—e.g., the runners of a strawberry plant.