a black one
Until the letter is selected, it is a variable. Immediately after it is selected, the outcome is no longer a variable but a constant.
15 19
If the events can be considered independent then the probability is (0.7)4 = 0.24 approx.
Using the Poisson approximation, the probability is 0.0418
If you select 45 cards without replacement from a regular deck of playing cards, the probability is 1. For a single randomly selected card, the probability is 2/13.
Non probability sampling is where the samples are not selected randomly.
Word 1) 'math' has one vowel letter among a total of 4 letters. The probability of randomly selecting the vowel letter 'a' is P(v) = 1/4. Word 2) 'jokes' has two vowel letters among a total of 5 letters. The probability of randomly selecting a vowel letter is P(v) = 2/5. The probability of randomly selecting a vowel letter from the first word and a vowel letter from the second word is: P(v1,v2) = 1/4 (2/5) = 2/20 = 1/10 = 0.10 = 10.0%
There are 10 letters in the word "aspiration" and 5 of them are vowels. The probability of a randomly-selected letter being a vowel are 5/10 = 1/2 = 0.50.
The probability of selecting 1 female at random is 4/8 There are now 7 students, 3 of which are female so the probability of selecting another female is 3/7 The probability two randomly selected students are female is (4/8)x(3/7)= 3/14
Until the letter is selected, it is a variable. Immediately after it is selected, the outcome is no longer a variable but a constant.
The answer depends on the demography of the population from which the person is randomly selected.The answer depends on the demography of the population from which the person is randomly selected.The answer depends on the demography of the population from which the person is randomly selected.The answer depends on the demography of the population from which the person is randomly selected.
10/12
The answer will depend on what the disease is.
15 19
85/500 = 17%
If the events can be considered independent then the probability is (0.7)4 = 0.24 approx.
It is approx 0.001824