Estimate the Indicated Probability by Using the Normal Distribution as an Approximation

question 147

Multiple Choice

Estimate the indicated probability by using the normal distribution as an approximation to the binomial distribution.
-A multiple choice test consists of 60 questions. Each question has 4 possible answers of which one is correct. If all answers are random guesses, estimate the probability of getting at least 20% correct.

• A) 0.8508
• B) 0.0901
• C) 0.1492
• D) 0.3508

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Definitions:

High Barriers to Entry

Obstacles that make it difficult for new competitors to enter an industry, such as high startup costs or strict regulations.

Marginal Revenue

The extra revenue earned by selling an additional unit of a product or service.

Profit-Maximizing Monopolist

A monopolistic firm that seeks to maximize its profits by adjusting output or prices, considering its unique market power without competition.

Profit

The financial gain realized when the amount of revenue gained from a business activity exceeds the expenses, costs, and taxes needed to sustain the activity.