Solve the problem.Find the probability of getting 2 tails when 3 fair coins are tossed.
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.The average of a data set consisting of 11 numbers is 6. The smallest of the numbers is Min = 1. If Max is the largest of the numbers in the data set, which of the following could be a possible value of Max?
A. 65 B. 6.4 C. 6.6 D. 6 E. none of these
Find the unit tangent vector of the given curve.r(t) = (8 sin3 7t)i + (8 cos3 7t)j
A. T(t) = (sin 7t)i - (cos 7t)j B. T(t) = (8 cos 7t)i - (8 sin 7t)j C. T(t) = (8 sin 7t)i - (8 cos 7t)j D. T(t) = (168 sin 7t)i -(168 cos 7t)j
Solve the problem.The logistic growth function f(t) = 
models the number of people who have become ill with a particular infection t weeks after its initial outbreak in a particular community. How many people were ill after 4 weeks?
A. 39,000 people B. 39,650 people C. 26,271 people D. 240 people
Find the product of the complex number and its conjugate.-2 + 7i
A. 54 B. 56 C. -45 D. 53