A Researcher Wants to Conduct a Before/after Study on 11

question 80

Multiple Choice

A researcher wants to conduct a before/after study on 11 subjects to determine if a new cholesterol medication results in higher HDL cholesterol readings.The null hypothesis is that the average difference is zero while the alternative hypothesis is that the average difference is not zero.Scores are obtained on the subjects both before and after taking the medication.After subtracting the after scores from the before scores, the average difference is computed to be -2.40 with a sample standard deviation of 1.21.Assume that the differences are normally distributed in the population.The observed t value for this test is _______.

• A)-21.82
• B)-6.58
• C)-2.4
• D)1.98
• E)2.33

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Definitions:

Par Value

The nominal or face value of a stock or bond as stated by the issuer, which may differ from its market value.

Coupon Rate

The yearly interest rate provided by a bond, shown as a percentage of the bond's nominal value.

Yield To Maturity

Yield to maturity represents the total return an investor would receive by holding a bond until it matures, including all interest payments and the repayment of principal.

Realized Compound Yield

The reflective measurement of the total returns on an investment, factoring in compounding interest or returns over a specified time frame.