Solve the problem.In how many ways can a group of 7 students be selected from 8 students?
A. 1
B. 8
C. 56
D. 7
Answer: B
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A college needs two additional faculty members: a chemist and a statistician. In how many ways can these positions be filled if there are three applicants for the chemistry position and four applicants for the statistics position?
a. 10 b. 11 c. 16 d. 12
Simplify.
A. 
B. 
C. 
D. 
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083
Graph the set of numbers on a number line.{-6, -4, -2, 0}
A. 
B. 
C. 
D. 