Solve the Problem. -A Final Exam in Math 160 Has a Mean of a Mean

question 76

Multiple Choice

Solve the problem.
-A final exam in Math 160 has a mean of 73 with standard deviation 7.8. If 24 students are randomly selected, find the probability that the mean of their test scores is less than 70.

• A)0.9699
• B)0.0301
• C)0.1006
• D)0.0278

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Definitions:

Profitability Index

Profitability Index (PI) is an investment appraisal technique that calculates the ratio between the present value of future cash flows and the initial investment cost, helping to determine the desirability of a project.

Cash Outflows

Money or funds leaving a business, typically for expenses, investments, or other payments.

Investment Projects

Initiatives or plans requiring capital investments aimed at generating future benefits or returns.

Simple Rate

A straightforward percentage or interest rate, typically referring to finance or investment, without compounding over time.