A Researcher Selects a Sample of 49 Participants from a Population

question 30

Multiple Choice

A researcher selects a sample of 49 participants from a population with a mean of 12 and a standard deviation of 3.5.What is the probability of selecting a sample mean of 13 or larger from this population?

• A)equal to the probability of selecting a score above the mean
• B)about one standard deviation below the mean
• C)less than .03
• D)greater than .31

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Definitions:

Denominated

Indicates the currency in which a financial transaction is specified or an investment is made.

Expected Return

The anticipated average return on an investment under normal conditions, taking into account both the probability of each outcome and the return of each outcome.

Portfolio

A collection of financial investments like stocks, bonds, commodities, cash, and cash equivalents, including mutual funds and ETFs.

Covariance

A measure used in statistics to determine how two variables move together, indicating the degree to which they are correlated.