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kayla942783
05.07.2019 •
Mathematics
About 12% of the population of a large country is hopelessly romantic. if two people are randomly selected, what is the probability both are hopelessly romantic/ what is the probability least one is hopelessly romantic?
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Ответ:
Probabilities are used to determine the chances of an event
The probability that both are hopelessly romantic is 0.0144The probability that at least 1 is hopelessly romantic is 0.2256The given parameters are:
(a) The probability that both are hopelessly romantic
This is calculated as:
So, we have:
Express as percentage
Hence, the probability that both are hopelessly romantic is 0.0144
(b) The probability that at least one is hopelessly romantic
First, calculate the probability that none are hopelessly romantic
This is calculated as:
So, we have:
Express as percentage
Using the complement rule, the probability that at least 1 is hopelessly romantic
Hence, the probability that at least 1 is hopelessly romantic is 0.2256
Read more about probabilities at:
link
Ответ:
If two people are randomly selected, then the probability both are hopelessly romantic=0.0144
If two people are randomly selected, then the probability at least one is hopelessly romantic =0.2256
Step-by-step explanation:
Binomial probability distribution formula :-
Given : The probability of population of a large country is hopelessly romantic =0.12
If two people are randomly selected, then the probability both are hopelessly romantic :-
If two people are randomly selected, then the probability at least one is hopelessly romantic:-
Ответ:
Number of drawers: 2 3 4
Total Volume (cubic inches) 5 7.5 10
(7.5 - 5) / (3 - 2) = 2.5 / 1 = 2.5 this is the common ratio.
number of drawers represented by d ; total volume of drawers represented by V
V = 2.5d
17.5 = 2.5 d
17.5 / 2.5 = d
7 = d
There will be 7 drawers in a jewelry box that has a total volume of 17.5 cubic inches.