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

question 8

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 the 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 n₁ = n₂ = 50, $\sigma$ ₁ = 0.2 and $\sigma$ ₂ = 0.3.With $\alpha$ = .05, the observed z value is ______.

• A)−9.71
• B)−1.37
• C)−0.7
• D)1.37
• E)1.96

Apply knowledge of validity types to evaluate psychological tests and measurements.

Identify and understand the role of construct validity in reflecting underlying ideas in tests.

Interpret the relationship between test-retest reliability and temporal stability of measures.

Understand the importance and calculation of interrater reliability in observing behaviors.

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Definitions:

Tipper

An insider who gives inside information to someone.

Tippee

An individual who receives confidential information from an insider.

Publicly Traded

Refers to a company whose shares are available for purchase by the general public on a stock exchange.

Confidential Information

Data or information of a private nature, the disclosure of which to unauthorized individuals can be harmful to an individual, group, or organization.