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A survey of 850 workers were asked how much they used the Internet at work. 578 said they used the internet within limits, and 255 said that they...

Q-3d. A survey of 850 workers were asked how much they used the Internet at work. 578 said they used the internet within limits, and 255 said that they did not use the Internet at work. Construct a 95% confidence interval estimate for the proportion of all workers who did not use the Internet within limits. Explain your findings so that your non-quantitative partner will understand them. (5 pts.)
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Q-3e. You are the designer for your company's web site. You have data to indicate that the mean download time for the homepage is 5.8 seconds and that the standard deviation of download time is 2.1 seconds. If we assume that the download times are normally distributed, what percent of users will wait between 4 and 8 seconds for the homepage to download? Explain your findings so that your non-quantitative partner will understand them. (5 pts.)

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Top Answer

Hi please find the attached... View the full answer

8487271.xlsx

Solution of question 1st
n
P= = 850
255 / 850
0.3
0.7 1- P =
the confidence interval for a proportion of
p ± z σp where p is the proportion in the sample . Z is the value at .05 level and σp is...

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