150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 65 and standard deviation ? = 10.A score of 50 corresponds to a standardized value of
A. -5.
B. 5.
C. 1.5.
D. -1.5.
E. none of these
Answer: D
Mathematics
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A. 
B. 
C. 3
D. 
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 2
B. - 
C. -4
D. 
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Find n(A) for the set.A = {{?}, {0}, {?, 0}}
A. n(A) = 0 B. n(A) = 3 C. n(A) = 4 D. n(A) = 2
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You are dealt one card from a 52-card deck. Find the probability that you are not dealt:a heart.
A. 
B. 
C. 
D. 
Mathematics