Find the probability. 18) A spinner has an equal chance of landing on 19) Your s

Question

Find the probability. 18) A spinner has an equal chance of landing on 19) Your sock drawer has two white socks, six each of its three numbered regions. You spin three times. Each spins lands in region two. brown socks, and six black socks. You randomly pick two socks and get a matching pair of black socks. A) 0.167 15 91 B) 0.021 A) ~0.165 B)--0,025 48 40 C) C 025 0.278 D) _~0.037 D) 0.028 18 27 4 36 20) A bag contains five red marbles, three blue 21) A math teacher gave her class two tests. marbles, and five yellow marbles. You randomly pick three marbles without replacement. The first marble is red, the second marble is blue, and the third marble is red. 25% of the class passed both tests and 42% of the class passed the first test. What percent of those who passed the first test also passed the second test? A) 0.67 B 1.68 C) 0.34 D) 0.60 A)0.231 B)0.269 26 392 3375 13 C) 0.035 D0.116 143

Explanation / Answer

Question 18:

Probability that each spin lands in the region two is computed as:

= (1/3)3

= 1/27

Therefore D is the correct answer here.

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