A Researcher in Interested in Whether Students Who Are Musicians $\sigma$

question 52

Multiple Choice

A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population.The researcher predicts that playing a musical instrument is associated with higher intelligence test scores.The researcher selects a sample of 75 musicians from local high schools and gives them an intelligence test.The mean for the sample is 105.The mean for the general population (µ) is 100 with a standard deviation ( $\sigma$ ) of 15.What is z_obt for this sample?

• A).33
• B)1.89
• C)2.89
• D)3.25

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Definitions:

Discount

A deduction from the usual cost of something, or the process of determining the present value of future cash flows by adjusting for the time value of money.

Semiannual Coupon

Interest payments made twice a year by a bond issuer to the bondholders.

Current Interest Rates

The interest rate present at the moment in the financial market, affecting loans and savings.

Market Price

represents the current price at which an asset or service can be bought or sold in a marketplace.