Business, 19.12.2019 05:31 evanwall91
Arandom sample of 81 automobiles traveling on a section of an interstate showed an average speed of 60 mph. the distribution of speeds of all cars on this section of highway is normally distributed, with a standard deviation of 13.5 mph. refer to exhibit a. if we are interested in determining an interval estimate for μ at 86.9% confidence, the z value to use is
a. 1.96
b. 1.31
c. 1.51
d. 2.00
Answers: 3
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Business, 22.06.2019 22:30
The answer here, x=7, is not in the interval that you selected in the previous part. what is wrong with the work shown above?
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Arandom sample of 81 automobiles traveling on a section of an interstate showed an average speed of...
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