A Random Sample of 49 Statistics Examinations Was Taken

question 53

Multiple Choice

A random sample of 49 statistics examinations was taken.The average score, in the sample, was 84 with a variance of 12.25.The 95% confidence interval for the average examination score of the population of the examinations is

• A) 80.48 to 87.52.
• B) 77.40 to 86.60.
• C) 82.99 to 85.01.
• D) 68.00 to 100.00.

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Definitions:

Positive Earnings Surprises

Occurs when a company's reported earnings exceed analysts' expectations.

Abnormal Return

The difference between the actual return of an investment and the expected return given its risk profile and market performance.

Price Drift

The slow and incremental movement in the price of an asset, reflecting gradual changes in investors' valuation over time.

Contrarian Approach

An investment strategy that involves going against prevailing market trends or sentiments, buying underperforming assets, and selling when they perform well.