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

question 55

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

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Definitions:

Great Depression

A severe worldwide economic downturn that lasted throughout the 1930s, marked by widespread unemployment, deflation, and a significant decline in economic output.

National Banks

National banks are financial institutions chartered by the federal government of a country, authorized to provide a variety of banking services, including accepting deposits, making loans, and issuing currency.

Interest-rate Ceilings

Regulatory limits placed on the maximum interest rates that can be charged on loans, intended to protect borrowers.

Bank Profits

The earnings generated by banks, derived from the difference between the interest paid on deposits and the interest received from loans.