Concept explainers
a.
To calculate:Theprobability that the
a.
Answer to Problem 21PSD
Theprobabilityis
Explanation of Solution
Given information:
The angles of a rectangle and parallelogram that is not a rectangle are in a box.
Formula used:
Probability of event to happen is
Calculation:
The probability that the angles are congruent if two of the eight angles are selected at random is
b.
To find:Whether to take man’s bet of
b.
Answer to Problem 21PSD
No, you should not take man’s bet.
Explanation of Solution
Given information:
The angles of a rectangle and parallelogram that is not a rectangle are in a box.
A man offers to have two tries at getting a pair of congruent angles. In other words, you would draw a pairs of angles at random, then replace the pair, and then draw a pair again. The man is willing to bet you
Formula used:
Probability of event to happen is
The probability that the angles are congruent if two of the eight angles are selected at random is
The complementary of p is the p of draws that won’t win, i.e. 1 - p.
The p that is neither a winner is
The p of winning is
No, you should not take man’s bet because you will win
the time.
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