Solve the problem.The stem and leaf plot depicts the average weight (in pounds) of all four year olds receiving their annual influenza vaccine from the local health clinic. Units 6|6 = 66 poundsDescribe the shape of the distribution.

A. Uniform
B. Normal
C. Right skewed
D. Left skewed

Answer: B

Mathematics

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Simplify. Write your answers in the form of a+bi, where a and b are real numbers.

A. +  i
B. -  -  i
C. -  +  i
D. -  +  i

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Find .y = (x2 + 2x)ln x

A. (x² + 2x)^{ln x}
B. +
C. (x² + 2x)^{ln x}
D. +

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Solve the problem.The length of a rectangle is three inches more than the width. The area of the rectangle is 270 inches. Find the width of the rectangle.

A. 8 in. B. 18 in. C. 15 in. D. 9 in.

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Solve the problem.Find an upper bound for the error in estimating using the Trapezoidal Rule with n = 8 steps. Give your answer as a decimal rounded to four decimal places.

A. 0.6227 B. 0.3805 C. 0.2076 D. 0.3634

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Mathematics