Find the indicated probability. Round as indicated.In a certain college, 20% of the physics majors belong to ethnic minorities. If 10 students are selected at random from the physics majors, what is the probability that exactly 2 belong to an ethnic minority? Estimate the probability to five decimal places if necessary.
A. 0.00007
B. 0.30199
C. 1.8
D. 0.00671
Answer: B
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Refer to the following normal curve, with mean ? and standard deviation ?.
A data value of 30 corresponds to a standardized value of
A. -1. B. 1. C. -2. D. 2. E. none of these
Provide an appropriate response.Receiving a paycheck biweekly means that there are two pay periods per month or 24 in one year.
A. True B. False
Solve the problem.The probabilities that Hank will sell 0, 1, 2, or 3 cars this week are 0.15, 0.60, 0.24, and 0.01. Distribute the two-digit random numbers from 00 through 99 among these four possibilities so that the corresponding random numbers can be used to simulate the number of cars Hank sells in a week.
A. None of these B. 00 - 14, 15 - 74, 75 - 98, and 99 C. Not possible D. 00 - 15, 16 - 75, 76 - 98 and 99
Solve.Given that the triangles above are similar, find the unknown length n.
A. 144 B. 2.5 C. 0.25 D. 14.4