A manufacturer of light bulbs claims that the distribution of the light bulb life span has a mean of 60 hours and a standard deviation of 4 hours. The competition decides to check this claim by purchasing 30 light bulbs and testing them to determine the life span of the light bulbs. If the manufacturer's claim is true, how will the sampling distribution of the 30 light bulbs compare to the reported population distribution?

• A.The sampling distribution will be approximately normal with a mean of 60 hours.
• B.The sampling distribution will have a standard deviation of 4 hours.
• C.The sampling distribution will be approximately the same as the population distribution, skewed if the population is skewed, normal if the population is normal.

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Suppose the Brazilian real is quoted at US$:R = 0.9955-1.0076 and the Thai baht is quoted at US$:B
= 25.2513-3986. What is the direct quote for the real in Bangkok (R:B=?)?

• A.30.5541 - 6456
• B.25.1376 - 2654
• C.25.0608 - 5134

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Which of the following bonds will have the smallest percentage decrease in price if all required returns increase by 1%?

• A.20-year zero-coupon bond
• B.20-year 10% coupon bond
• C.1-year 10% coupon bond

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What type of charts does NOT provide four prices per data point entry?

• A.Point and figure chart.
• B.Candlestick chart.
• C.Bar chart.

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The market demand for an item is

• A.the vertical summation of individual demand curves.
• B.the horizontal summation of individual demand curves.
• C.smaller than the sum of individual demands because of competition for the same units.

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