Consider the Following to Answer the Question(s) Below

question 10

Multiple Choice

Consider the following to answer the question(s) below:
Insurance companies track life expectancy information to assist in determining the cost of life insurance policies. Last year the average life expectancy of all policyholders was 77 years. ABI Insurance wants to determine if their clients now have a longer life expectancy, on average, so they randomly sample some of their recently paid policies. The insurance company will only change their premium structure if there is evidence that people who buy their policies are living longer than before. The sample has a mean of 78.6 years and a standard deviation of 4.48 years.

-The correct value of the test statistic is

• A) t = -1.597.
• B) t = 2.779.
• C) t = 1.597.
• D) t = 0.443.
• E) t = -2.779.

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Definitions:

Neuronal Structure

The specific anatomical and functional configuration of a neuron, including its cell body, axon, and dendrites.

Corticotrophin-releasing Hormone

A hormone produced in the hypothalamus that stimulates the release of ACTH from the pituitary gland, playing a key role in the stress response.

Hypothalamus

Diencephalon structure that contains many nuclei associated with temperature regulation, eating, drinking, and sexual behavior.

Neurotransmitter Systems

Systems in the brain that use neurotransmitters to communicate between neurons, influencing various functions such as mood, sleep, and heart rate.