Solve the problem.The standard deviation of a normal distribution is ? = 20. What is the interquartile range for this distribution?

A. 27
B. 33.75
C. 13.5
D. 6.75
E. none of these


Answer: A

Mathematics

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Find  by implicit differentiation. ?

What will be an ideal response?

Mathematics

State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.f(x) = 11

A. Yes; degree 1 B. Yes; degree 0 C. No; it is a constant D. No; it contains no variables

Mathematics

Determine if the ordered pair is a solution of the equation. Remember to use alphabetical order for substitution.(5, 7); x + y = 12

A. Yes B. No

Mathematics

Translate the sentence to an equation.r decreased by 7 yields 28.

A. r - 7 = 28 B. r - 28 = 7 C. 28 - r = 7 D. 7 - r = 28

Mathematics