Find the eccentricity of the ellipse Solution:- eccentricity of the ellipse = c/a c = √(a^2 – b^2) c = √(25-5) c= √(20) c = 2√(5) eccentricity = (2√5)/5 …
Month: November 2015
Problem 1142
Is the following an example of empirical probability? A weather forecast that predicts a 20% change of a tornado tomorrow. Solution:- Probabilities are empirical when it is not…
Problem 1141
Is the following an example of empirical probability? The probability of getting a 6 on 4 consecutive rolls of a die. Solution:- Probabilities are empirical when it is…
Problem 1140
A card is drawn from a well-shuffled deck of 52 cards. Find the probability of drawing an ace. Solution:- The probability of an event E that is a…
Problem 1139
A die is tossed. What is the probability of rolling a number greater than 4? Solution:- The sample space is S = {1, 2, 3, 4, 5, 6}…
Problem 1138
A single fair 80 sided die is rolled. Find the probability of getting a 5. Solution:- First, write the sample space S by listing all the possible outcomes…
Problem 1137
Slips of paper marked with the numbers 9, 10, 11, and 12 are placed in a box. After being mixed, two slip are drawn simultaneously. Write out the sample space…
Problem 1136
Use the union rule to answer the question. If n(B) = 52, n(A ∩ B) = 15 and n(A U B) = 86, what is n(A)? Solution:- Recall…
Problem 1135
Use the union rule to answer. If n(A) = 10, n(B) = 15 and n(a ∩ B) = 9, what is n(A U B)? Solution:- The union rule…
Problem 1134
Suppose Kendra Gallegos has appointments with 12 potential customer. Kendra will be ecstatic if all 12 of these potential customers decide to make a purchase from her. Of course, in…
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