5,341 Answered Questions for the topic probability

Probability

07/21/20

What is the probability that Dee wins?
Suppose Don Gregg & Dee Poset are the only 2 candidates for president. The probability that Don wins is 0.38. What is the probability that Dee wins?
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Probability

07/21/20

How do I solve this problem?
An event is very unlikely to happen. It’s probability would be about ______
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Probability Statistics

07/20/20

How many 4-character passwords can you make from the letters A, B, C, D, and E if you allow no repetition? In other words, you can have ABCD, but not AABC or ABCA.
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Probability

07/20/20

Given the following information: P(A) = 0.58 P(B) = 0.34 P(A and B) = 0.12 P(B given A) = 0.21
What is the probability of A or B? Round your answer to the nearest hundredth as needed  .P(A or B) = 
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Probability

07/20/20

A bag contains 6 white counters, 10 black counters, and 7 green counters. What is the probability of drawing
A.  a white counter or a green counter?B. a black counter or a green counter?C. not a green counter?
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Probability

07/20/20

A jar contains 5 pennies, 5 nickels and 8 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins.
A. Find the probability X = 10.B. Find the probability X = 11C. Find the expected value of X. 
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Probability

07/20/20

A math class consists of 38 students, 24 female and 14 male. Three students are selected at random, one at a time, to participate in a probability experiment (selected in order without replacement).
A. What is the probability that a male is selected, then two females?B. What is the probability that a female is selected, then two males?C. What is the probability that two females are selected,... more
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Probability

07/20/20

give each student a bag of chocolate m&ms. divide the students into groups of 5 or 6. calculate the relative frequency distribution for color of m&ms for each group.
(a) what is your estimated probability of randomly picking a yellow? a red? (b) redo the calculations for the whole classroom. did the estimates change? (c) do you believe there is an equal number... more
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Probability Statistics

07/20/20

Testing a Claim about a Proportion
A genetic experiment involving peas yielded one sample of offspring consisting of 427427 green peas and 167167 yellow peas. Use a 0.05 significance level to test the claim that under the... more
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Probability Finite Math

07/19/20

Finite Math: Probability
Wonder Widgets Inc. has 3 plants producing their De-lux Wonder Widget (DWW). Plant A produces 80% of all DWW, plant B 15%, and plant C the remaining 5%. 7% of Plant A’s production is defective, 6%... more
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Probability Finite Math

07/19/20

Finite Math: Probability
Assume that 37% of the voting population in the US considers themselves as Democrats. Ten of these voters are selected at random(a) What is the probability that exactly 3 of the 10 selected... more
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Probability Finite Math

07/19/20

Probability: Independent Events
Let A and B be independent events with P(A) = .4 and P(B) = .2. Find P(A ∪ B).
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Probability Finite Math

07/19/20

Probability: Combinations
A club consists of 15 women and 10 men. They need to form a committee of 5 people. (a) How many different committees can be formed? (b) How many different committees consisting of 3 women and 2 men... more
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07/18/20

Probability of a cubic having three real roots.
third degree polynomial is given as follows. f(x)=2x3-ax2+bx+4 a, b coefficients of the equation a,b interval between [-4,4]. what is the probability that all three roots of this equation are real... more
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Probability Math Statistics

07/18/20

Probability & Statistics
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Probability

07/17/20

The probability that a baby boy born by a certain couple will grow up to be tall is 1/ 4. The probability of the couple to get a tall daughter is

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Probability Statistics

07/17/20

HELP!!! I need help with statistics!

Help!!! With a SD of 16 a mean of 84 what would the probability be that someone scored an 80 on a test? Z score is -0.25. Also, with a Z score of 0.375, what would the probability be for someone to... more
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Probability Statistics Economics

07/17/20

If you draw a card with a value of four or less from a standard deck of cards, I will pay you $7. If not, you pay me $6. (Aces are considered the highest card in the deck.)
Step 1 of 2 :  Find the expected value of the proposition. Round your answer to two decimal places. Losses must be expressed as negative values.
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Probability Finite Math

07/16/20

Finite Math: Probability
A lot of 250 light bulbs contains 20 defective bulbs and 230 good bulbs. A sample of 4 different light bulbs is selected at random.(a) What is the probability that all 4 bulbs selected are good?(b)... more
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Probability Finite Math

07/16/20

Finite Math: Probability
A container has 7 red marbles, 3 white marbles, and 5 blue marbles. A marble is selected at random from these 15 marbles, its color is noted and it is replaced. A second marble is selected from the... more
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Probability Finite Math

07/16/20

Finite Math: Probability & Independence
Last year in Way-up-there Alaska voted for mayor with the following results: Democrat Republican Bull-Moose Party Male 12 22 21 Female 24 13 33 One of these voters is selected at random.(a)... more
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Probability Finite Math

07/16/20

Finite Math: Probability
The House of Representatives consists of 435 members. They considered two bills. 325 members voted yes on bill A. 250 members voted yes on bill B. 170 members voted yes on both bills.(a) How many... more
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Probability Finite Math

07/16/20

Finite Math: Probability
A container has nine marbles numbered 1, 2, 3, 4, 5, 6, 7, 8, 9. Two different marbles are selected at random from this container.(a) What is the probability that one of the marbles selected was... more
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Probability Math Statistics

07/14/20

Sampling distribution

Suppose our population consists of the values (2, 3, 5, 7, 11, 13, 17), that is, our population is the first 7 prime numbers (one of each).a) If we take a simple random sample of size k, where k is... more
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Probability Discrete Math

07/14/20

What is the probability that a student picked at random took Precalculus, given that she passed Calculus?

A college requires certain students to take Precalculus prior to taking Calculus. Thirty-five percent of students that eventually take Calculus take the Precalculus course. Sixty percent of those... more
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