A manufacturer of mosquito repellent claims that the average amount of time their repellent is effective is at least 3.5 hours.
A consumer group tests the claim using five randomly selected people. If the average time of effectiveness from the sample was 3.8 hours with a standard deviation of 0.76 hours, what is the critical value (CV test statistic (TS), and decision for this test? (Assume the underlying population is normal and use CI 0. 025.)
1 answer:
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The rate at which his pulse is increasing after 3 minutes is 9.5 beats per minute
<h3>How to determine the beat rate after 3 minutes?</h3>The given graph shows the curve and the tangent.
From tangent line, we have the following points:
(x,y) = (3,119) and (1,100)
The beat rate (m) at this point is:
So, we have:
Evaluate the differences
Evaluate the quotient
m = 9.5
Hence, the rate at which Sam's pulse is increasing after 3 minutes is 9.5 beats per minute
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