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

question 3

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,if the null hypothesis of no connection between time spent watching TV and time spent reading story books is true,how many children watching less than 2 hours of TV and reading more than 2 hours of story books on average can we expect?

• A)42.09
• B)155.25
• C)262.92
• D)987.75

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Definitions:

Presynaptic Cell

A neuron that sends a signal to a neighboring neuron at a synapse, typically by releasing neurotransmitters.

Synapse

The junction across which nerve impulses pass from one neuron to another or to a muscle or gland cell.

Postsynaptic Cell

The cell that receives a signal (usually neurotransmitters) from another neuron at a synapse.

Neuroglia

Supportive cells in the nervous system that provide structure, nourishment, and protection for neurons.