Answers DRHS GA-Statistical ReasoningUnit Test

Uniform Density Curves Answers

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A uniform density curve goes from negative 5 to positive 1.

Negative one-sixth

One-sixth

One-fifth

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graph A only, because the curve is above the horizontal axis, and the area under the curve is 1

graph B only, because the curve is above the horizontal axis, and the area under the curve is 1

both graph A and graph B, because both curves are above the horizontal axis, and the areas under both curves equal 1

neither graph A nor graph B, because, even though both curves are above the horizontal axis, the area cannot be determined for graph B

Taylor's computer randomly generate numbers between 0 and 4, as represented by the given uniform density curve.

12.5%

25%

50%

87.5%

Data collected from a coffee shop indicate that the price of a drink forms a consistent pattern that can be graphed as the given uniform density curve.

One-third

one-half

Two-thirds

Data collected from a coffee shop indicate that the price of a drink forms a consistent pattern that can be graphed as the given uniform density curve.

StartFraction 1 Over 30 EndFraction

One-sixth

One-third

One-half

Consider the given density curve.

–1

Consider the given density curve.

–10

–7

–6

–2

Consider the given uniform density curve.

4.25

4.5

4.75

Graph A: A horizontal line goes from (1, 0.5) to (2, 0.5). Another horizontal line goes form (2, 0.2) to (7, (0, 2). Graph B: A curve starts at (0, 0), curves up to (1, 1), and then curves down to (2, 0).

graph A only, because the curve is above the horizontal axis, and the area under the curve from 2 to 7 is 1

graph B only, because the curve is above the horizontal axis, and the area under the curve is equal to 1.57

both graph A and graph B, because both curves are above the horizontal axis, and both areas are positive

neither graph A nor graph B, because, even though both curves are above the horizontal axis, neither graph has an area of 1

Records show that Oliver is typically 10–30 minutes late for his shift at work. The distribution for the minutes he is late forms a consistent pattern, which can be graphed as the given uniform density curve.

26.7%

33.3%

40%

50%

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Uniform Density Curves Answers

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