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Befuddled Befuddled
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Use the following to answer the questions below:

An Internet provider contacts a random sample of 300 customers and asks how many hours per week the customers use the Internet. It found the average amount of time spent on the Internet per week to be about 7.2 hours.


The standard error is about 0.458. Find a 95% confidence interval for the parameter. Round the margin of error to two decimal places.

▸ 5.82 to 8.58 hours

▸ 7.04 to 7.66 hours

▸ 6.77 to 7.43 hours

▸ 6.28 to 8.12 hours
Textbook 
Statistics: Unlocking the Power of Data

Statistics: Unlocking the Power of Data


Edition: 3rd
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mattyca001mattyca001
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Befuddled Author
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Thanks
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Smart ... Thanks!
dri
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You make an excellent tutor!
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