Your Company Is Evaluating Two Cloud-Based Secured Data Storage Services $\sigma$

question 26

Multiple Choice

Your company is evaluating two cloud-based secured data storage services."Pie in the Sky," the newer service,claims its uploading and downloading speeds are faster than the older service,"Cloudy but Steady Skies." You need to make a decision based on published access times for both services at different times and for varying file sizes.To make your decision,you purchase a statistical study,which indicates that average download time for Pie in the Sky is 0.77 sec.per MB and for Cloudy but Steady Skies is 0.84.Assume that $\sigma$ ₁ = 0.2 and $\sigma$ ₂ = 0.3.With $\alpha$ = .05,the critical z value is ______.

• A) 1.645
• B) −1.645
• C) 1.96
• D) −1.96
• E) 2.33

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Definitions:

Cyberbullying

The use of digital technology, such as the Internet and mobile phones, to harass, threaten, or intimidate someone.

Instant Messaging

A form of communication over the internet that allows two or more people to exchange text messages in real-time.

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The quality or state of being all the same or all of the same kind, often used to describe populations, materials, or mixtures with uniform composition.

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Platforms on the Internet where individuals can create profiles, share information, and socialize with others.