Larry Started a Fitness Program About 8 Weeks Ago

question 17

Multiple Choice

Larry started a fitness program about 8 weeks ago. He runs 5 kilometres every day and does some weight training. He likes to use weight machines and focuses on 1 or 2 muscle groups each day. He could initially do 6 repetitions of most exercises in his program, and he can now do 15-20. Larry likes the initial improvement in his energy level and appearance since starting the program. He has noticed that his work in construction seems a little easier, too. However, Larry doesn't think he is getting as much benefit out of his program now as he did at the start of his fitness program. Larry isn't seeing as much improvement as he did initially because

• A) his body is conserving energy.
• B) he has reached his optimal level of fitness.
• C) his body isn't as responsive to the level of exercise as it was initially.
• D) his diet isn't compatible with his fitness program.

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Definitions:

Level of Confidence

The degree of certainty, often expressed as a percentage, that a parameter lies within a specified range of values.

Hypothesis Testing

A statistical method used to determine if there is enough evidence in a sample of data to infer that a certain condition is true for the entire population.

Interval Estimation

Estimation of a population parameter with a range, or interval, of values within which one has a certain degree of confidence the population parameter falls.

Confidence Interval

A collection of numerical indicators, derived from sampling statistics, believed to contain the estimations of an obscure population parameter.