E is an event and Find .
The probability is .
The given statement is:
E is an event and .
The event [not A], i.e. the event in which A does not happen, is the complement of any event A. Events A and [not A] are mutually exclusive as well as exhaustive.
In Exercises 5.16-5.26, express your probability answers as a decimal rounded to three places.
Murder Victims. As reported by the Federal Bureau of Investigation in Crime in the United States, the age distribution of murder victims between 20 and 59 years old is as shown in the following table.
A murder case in which the person murdered was 59 years old is selected at random. Find the probability that the murder victim was
(a) between 40 and 44 years old, inclusive.
(b) at least 25 years old, that is, 25 years old or older.
(c) between 45 and 59 years old, inclusive.
(d) under 30 or over 54.
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