A statistics instructor collected data on the time it takes the students to complete a test....
A statistics instructor collected data on the time it takes the students to complete a test. The test taking time is uniformly distributed within a range of 55 minutes to 85 minutes.
a) Determine the height and draw this uniform distribution.
b) How long is the typical test taking time?
c) Determine the standard deviation of the test taking time.
d) What is the probability a particular student will take less than 60 minutes?
e) What is the probability a particular student will take between 60 and 70 minutes?
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A statistics instructor collected data on the time it takes the
students to complete a test....
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An inexperienced on-line instructor would like to estimate the mean time that it takes her students...
An inexperienced on-line instructor would like to estimate the mean time that it takes her students to complete one of her tests. She takes a random sample of 30 test times and finds that the mean in the sample is 36 minutes with a standard deviation in the sample of 3 minutes. Which of the following would be the appropriate calculation for constructing a 98% confidence interval to estimate the mean test time for all of her students? a. 34.726...
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