Question: A GlobalWebIndex study, as reported by TechCrunch (tcrn.ch/1MPKLRf), noted the percentage of adult Internet users that owned various devices. Suppose that a survey of 1,000

A GlobalWebIndex study, as reported by TechCrunch (tcrn.ch/1MPKLRf), noted the percentage of adult Internet users that owned various devices. Suppose that a survey of 1,000 adult Internet users found the 910 adult users own a computer, 800 own a smartphone, 470 own a tablet, and 90 own a smart watch.

a. For each of the four devices, construct a 95% confidence interval estimate for the population proportion of the adult Internet users that own the device.

b. What conclusions can you reach concerning which devices adult Internet users have?

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