Biology, 06.02.2021 21:30 brucewayne8499
(e) Doctors tested people of different ages to time how long it took between touching
a sharp pin and the arm muscle contracting.
At each age they tested five men and calculated a mean value for the time.
The table below shows the results.
Age in years
Mean time for
muscle to
contract in
milliseconds
18
20
20
40
60
23
80
30
How much longer does it take for the muscle to contract at 80 years of age
compared to at 20 years of age?
Give your answer in seconds.
Time =
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(e) Doctors tested people of different ages to time how long it took between touching
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