It Has Been Reported That the Average Time to Download

question 33

Multiple Choice

It has been reported that the average time to download the home page from a government website was 0.9 seconds.Suppose that the download times were normally distributed with a standard deviation of 0.3 seconds.If random samples of 36 download times are selected,80 percent of the sample means will be between what two values symmetrically distributed around the population mean?

• A)[.648,1.152]
• B)[.836,.964]
• C)[.514,1.280]
• D)[.858,.942]

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