If X has a normal distribution with ? = 5 and ? = 2, find Pr(2 ? X ?6).
A. 0.2417
B. 0.9772
C. 0.6247
D. 0.7583
E. none of these
Answer: C
Mathematics
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Add.
A. 1,318 B. 1,018 C. 1,320 D. 1,220
Mathematics
Solve the radical equation. Check all proposed solutions.
- 
= 6
A. x = 9 B. x = -9 C. x = 10 D. no solution
Mathematics
Simplify the expression. If the expression contains any variables, assume that they represent positive real numbers. Write your answer with only positive exponents.
A. x33
B. x37
C. 
D. x13
Mathematics
Translate the sentence into algebraic symbols.If a number is increased by 26 and then the sum is multiplied by six, the result is 130.
A. 26 + 6x = 130 B. (x + 130) 26 = 6 C. 6(x + 26) = 130 D. 26x = 6(130) E. 130(x + 6) = 26
Mathematics