A healthy 20 year old has recently increased his exercise regimen, and wants to know what his maximum heart rate is. What is your answer? Group of answer choices 240 bpm That you'd have to calculate cardiac output and stroke volume first 200 bpm
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When engaging in weight-control (fitness or fat burning) types of exercise, a person is expected to attain about 160% of their maximum heart rate. For 20-year-olds, this rate is approximately 120 bpm. A simple random sample of one hundred 20-year-olds was taken, and the sample mean was found to be 107 bpm with a standard deviation of 45 bpm. Researchers wonder if this is evidence to conclude that the expected level is actually lower than 120 bpm. A 95% Confidence Interval will have a Margin of Error rounded to the hundredths place.
Adi S.
The maximum recommended heart rate (in beats per minute) is given by 220 minus a person's age. For acrobic activity, it is recommended that individuals exercise at $60 \%-85 \%$ of their maximum recommended heart rate. This is called the aerobic range. a. Find the maximum recommended heart rate for a 20 -year-old. b. Find the aerobic range for a 20 -year-old.
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The maximum heart rate of a person in normal health is related to the person's age by the equation $r=220-A$ where $r$ is the maximum heart rate in beats per minute and $A$ is the person's age in years. Some physiologists recommend that during physical activity a person should strive to increase his or her heart rate to at least $60 \%$ of the maximum heart rate for sedentary people and at most $90 \%$ of the maximum heart rate for highly fit people. Express as an interval the range of the target heart rate for a 20 -year-old.
William S.
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