5/8 * 4/5
5*4 20 1
----- = ----- = ---
8*5 40 2
5/8 * 4/5 = 1/2 or .5
Answer:
a) Classical
b) Subjective
c) Empirical
Step-by-step explanation:
a) Classical probability: In classical probability, all the events have the same probability. When flipping a coin, the probability of getting tails is the same as the probability of getting tails, therefore, the probability of both events is 50%.
b) Subjective probability: Subjective probability is derived from a personal judgement based on previous experiences. In this case, John would be calculating his probability of receiving A's based on his previous semesters.
c) Empirical probability: is the ratio between the number of outcomes a scenario happens and the total of trials in an ACTUAL EXPERIMENT. In this case, the reporter would be calculating this probability based on his previous experiences attending actual conferences.
Answer:
The probability is 82.64, Given this probability, lights should be installed because they exceed the 80% limit.
Step-by-step explanation:
according to the exercise we can have the data that
the number of accidents per year = 234
then we will look for the number of accidents per week obtaining:
234/52 = 4.5
the probability that more than 2 accidents will occur at most would be
p (x> 2) = 1-p (x <= 2)
replacing the data we get that
1- (p (x = 0) + p (x = 1) + p (n = 2))
= 1-0.1736 = 0.8264
we convert to a percentage and the answer is 82.64%
Given this probability, lights should be installed because they exceed the 80% limit.
