Question: Security experts are raising concerns about hackers targeting smartphones as

Security experts are raising concerns about hackers targeting smartphones, as owners store more personal and financial information on the devices. In 2012, it was estimated that 7% of smartphone users were victims of malicious attacks on their mobile devices. A random sample of 190 smartphone owners was recently selected, and it was found that 17 had experienced attacks on their devices. Using σ = 0.05, answer the following:
a. Based on this sample, can we conclude that the percentage of smartphone owners who have had their devices hacked has changed since 2012?
b. Determine the p value for this test and interpret its meaning.
c. Verify your results using PHStat.



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  • CreatedJuly 17, 2015
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