If a baseball player has a batting average of 0.285, what is the probability that the player will get the following number of hits in the next four times at…
Month: June 2015
Problem 780
A fair die is rolled four times. What is the probability of obtaining at least three 6’s? Solution:- P(at least three 6’s) = .016
Problem 779
A fair coin is tossed six times. What is the probability of obtaining at least five tails? Solution:- P(5 tails or more) =
Problem 778
Is the selection a permutation, a combination, or neither? A mother order lunch (tuna, hamburger, or soup) for each of her 4 children. Solution:- The selection is neither…
Problem 777
Is the selection a permutation, a combination, or neither? Alex picked 3 crayons from his crayon box to draw a picture. Solution:- The selection is a combination.…
Problem 776
Is the selection below a permutation, a combination, or neither? A president appoints 4 people to be the new president, vice-president, secretary, and treasurer. Solution:- The selection is…
Problem 775
Simplify the expression assuming that n is an integer and n ≥ 5. Solution:- = n(n-1)(n-2)(n-3)(n-4)
Problem 774
A fair coin is tossed three times. What is the probability of obtaining at least two tails? Solution:- P(2 tails or more) =
Problem 773
A fair coin is tossed four times. What is the probability of obtaining at least three tails? Solution:- P(3 tails or more) =
Problem 772
What proportion of the following sample of ten measurements lies within 1 standard deviation of the mean? Within 2 standard deviations ? Within 3 standard deviations? 2 ,4 ,1,2,2,4,3,5,2,3 …
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