Find the indicated probability or percentage for the normally distributed variable.The mean weekly income of teachers in one state is $390 with a standard deviation of 
The incomes are approximately normally distributed. What is the probability that a randomly selected teacher earns more than $425 a week?
A. 0.099
B. 0.215
C. 0.218
D. 0.782
Answer: C
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Refer to the weighted voting system 
and the Shapley-Shubik definition of power. (The three players are P1, P2, and P3.)In how many sequential coalitions is P2 the pivotal player?
A. 6 B. 1 C. 0 D. 2 E. none of these
Solve the problem.An insurance company will insure a $240,000 home for its total value for an annual premium of $580. If the company spends $30 per year to service such a policy, the probability of total loss for such a home in a given year is 0.001 and you assume either total loss or no loss will occur, what is the company's expected annual gain (or profit) on each such policy?
A. $340 B. $260 C. $310 D. -$240
Determine all possible rational solutions of the polynomial equation.f(x) = 2x3 - 5x2 + 7x - 17
A. ±1, ±2, ±17, ± 
B. ±1, ±17, ± 
, ± 
C. ±1, ±2, ±17
D. ±1, ± 
, ±2, ± 
Estimate the indicated probability.College students were given three choices of pizza toppings and asked to choose one favorite. The following table shows the results.
A randomly selected student prefers a cheese topping.
A. .321 B. .109 C. .339 D. .338