Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300
B. $0.60
C. $1
D. $100
Answer: B
Mathematics
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Fill in the blank(s) with the appropriate word(s).
Mathematics
Provide an appropriate response.Suppose X is normally distributed with ? = 80 and ? = 15. Without using tables, approximate P(50 < X < 80).
Fill in the blank(s) with the appropriate word(s).
Mathematics
Rewrite the expressions with rational exponents as radical expressions, and then solve the equation.(2x + 3)1/2 + (4 - x)1/2 = 4
A. 
B. ?
C. {3}
D. {-3}
Mathematics
Graph the hyperbola.9(x - 4)2 - 16(y - 3)2 = 144
A. 
B. 
C. 
D. 
Mathematics