5,341 Answered Questions for the topic probability

Probability Math

11/18/22

Find the probability of passing if the minimum passing grade is 60 %.
A quiz consists of 10 multiple-choice questions, each with 6 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing... more
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Probability

11/17/22

Probability of Events
Determine the probabilities of the events in the following (Hint: Use complementary events.). Give solution rounded to the nearest hundredth. a. Getting a sum of 2 at least once on 4 rolls of a... more
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Probability Math

11/16/22

The probability function fX for a random variable X is given by the table below.
The probability function fX for a random variable X is given by the table below.x | -1 0 1 2 3fX(x) = P(X = x)| 0.2 0 u 0.2 0.1(a) Find u.(b) Find the expected value and variance of the... more
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Probability Math

11/16/22

What is the probability that he or she slept for at least 8 hours last night? (Please round your final answer to 2 decimal places)
Employees from a company accepted an interview talking about their sleep last night. It is found that 80% of the employees slept for at least 8 hours last night. Among those sleeping for at least 8... more
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Probability Math

11/16/22

If the student is found to have earned an A grade, find the probability that he or she is a senior, that is P(D|A).
A class of introductory probability consists of 20 sophomores, 30 juniors and 50 seniors. The final grades show that 4 sophomores, 6 juniors and 10 senior received an A grade. Randomly choose a... more
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Probability Math Statistics

11/15/22

The probability function fX for a random variable X is given by the table below.

The probability function fX for a random variable X is given by the table below. x | -1 0 1 2 3 fX(x) = P(X = x)| 0.2 0 u 0.2 0.1 (a) Find u. (b) Find the... more
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Probability Math

11/15/22

If the student is found to have earned an A grade, find the probability that he or she is a senior, that is P(D|A).

A class of introductory probability consists of 20 sophomores, 30 juniors and 50 seniors. The final grades show that 4 sophomores, 6 juniors and 10 senior received an A grade. Randomly choose a... more
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Probability Math

11/15/22

What is the probability that he or she slept for at least 8 hours last night? (Please round your final answer to 2 decimal places)
Employees from a company accepted an interview talking about their sleep last night. It is found that 80% of the employees slept for at least 8 hours last night. Among those sleeping for at least 8... more
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Probability

11/15/22

If one person is selected from the population described in the​ table, find the probability that the person is not widowed.
Marital Status of a Certain Population, Ages18 or Older, in Millions MarriedMale: 68Female:67Total:135Never Married Male: 47Female: 31Total:78DivorcedMale: 8Female: 13Total: 21WidowedMale: 4Female:... more
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Probability

11/13/22

Probability of getting only one ball of red color
There are total 48 balls in a box. 12 balls of red color, 12 balls of green color, 12 balls of blue color, and 12 balls of yellow color. Two balls are chosen at random. What is the probability of... more
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Probability Statistics

11/12/22

Help me with this statistics homework please asap
1) A tyre manufacturer claims that more than 85% of the company’s tyres will last at least 80,000km. In a random sample of 400 tyres, 22 wore out before reaching 80,000km. Do the data support the... more
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Probability

11/10/22

A pizza place has pizzas in 3 different sizes, with 6 different flavors for the crust, and 12 different toppings. How many one-topping pizzas can be ordered?
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Probability Statistics

11/09/22

Probability Question
Robin bought a four-scoop ice cream cone having a scoop each of vanilla, chocolate, strawberry and cherry. In how many orders can the four scoops be stacked on the cone if they are stacked one on... more
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Probability

11/09/22

Probability to choose at random
A class of 18 girls and 12 boys. 2/9 of the girls and 1/4 of the boys walk to school. One student who walks to school is chosen at random. What is the probability that the chosen student will be a... more
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Probability

11/08/22

You have a sample mean of 41.5, a population mean of 125 and sample size of 16.find the 95 confidence interval

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Probability

11/08/22

You have a sample mean of 41.5, a population mean of 125 and sample size of 16.find the 95 confidence interval

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Probability

11/08/22

You have a sample mean of 41.5, a population mean of 125 and sample size of 16.find the 95 confidence interval

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Probability Math Algebra 1 Algebra 2

11/06/22

Determine the cost in dollars of producing x units of the game console for a retailer: C(x) = 80x + 150.
Find an expression for the average cost function C̅(x). Solve and interpret C̅(x) < 100
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Probability

11/06/22

Infinite Monkey Theorum
The Infinite Monkey Theorem states that a monkey hitting keys completely at random on a typewriter for an infinite amount of time will, eventually, type any given text. Even the complete works of... more
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Probability Math Sat Math Act Math

11/06/22

Dice probability problem
Let a dice with m faces, and on each faces is inscribed a different number from 1 to m, be rolled n times, what are the probabilities of a number k to accur if we add every number shown on the dices?
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Probability

11/05/22

Probability question
Assume that a procedure yields a binomial distribution with a trial repeated n=20n=20 times. Find the probability of exactly x=11x=11 successes given the probability p=p=19/60 of success on a... more
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Probability

11/05/22

It is found that approximately 10% of men have a type of color blindness that prevents them from distinguishing between red and green. If 3 men are selected at random
It is found that approximately 10% of men have a type of color blindness that prevents them from distinguishing between red and green. If 3 men are selected at random, find the probability that all... more
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Probability

11/04/22

Probability Playing Cards
Three cards are drawn from an ordinary deck of playing cards. You flip the last two of them and find that both are spades. What is the probability that also the first card is a spade?
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Probability

10/31/22

Getting the highest amount of positives on one set with a 50% random chance
If you had 2 sets of numbers, that both start at 0 (each set can only go up from 0, but never lower than 0), and you run a 50 percent coin flip computer program and if it is heads, you add +1 to a... more
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Probability

10/28/22

A committee of 4 people will be chosen randomly from 5 boys and 6 girls. How many different committees can be chosen?
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