5,385 Answered Questions for the topic probability

Probability Statistics

04/08/22

I need help with probability statistics!!

The lengths of births in a small rural village are normally distributed with a mean of 269 days and a standard deviation of 15 days.In what range would you expect to find the middle 98% of most... more
Probability Math Act Math Maths

04/07/22

Probability Math- Seven horses are entered into a race.

Seven horses are entered into a race. If three horses are tied for first place, and there are no ties among the other four horses, in how many ways can the seven horses cross the finish line?I... more
Probability

04/05/22

Two cards are selected from a standard deck of 52 playing cards. The first card is not replaced before the second card is selected. Find the probability of selecting a nine and then selecting a ten

The probability of selecting a nine and then selecting a ten is? Round to three decimal places as needed.
Probability Math

04/05/22

Probability of a poker hand

Five cards are drawn from a shuffled deck of 52 cards without replacement.What is the probability that the five cards will display a full house (three of a kind and two of a kind)?Explain your answer. more
Probability

04/04/22

I need help with probability

The table shows the outcomes of rolling two number cubes at the same time and finding the product of the two numbers. If Abby rolls two number cubes three hundred times, about how many times would... more
Probability

04/02/22

Probability of winning

Supposed a certain game is fair and costs $3 if you lose and has a net payoff of $5 if you win. The only possible outcomes of the game are winning and losing.What is the probability of winning?
Probability

04/02/22

Expected Value Question

A company estimates that 0.8% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $100.If they offer a 2 year extended... more
Probability

04/02/22

Expected Value Question

A company estimates that 0.7% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $350.If they offer a 2 year extended... more
Probability

04/02/22

Expected Value Questions

A company estimates that 0.6% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $450.If they offer a 2 year extended... more
Probability Genetics

04/02/22

The math gene...

Imagine that fondness for mathematics has a genetic basis. Here we'll suppose that math fondness is recessive, but also highly beneficial. About 10% of the population are of math-genotype aa with... more
Probability

04/01/22

What is the corresponding between z=0 and z= 1.74?

What is the corresponding between z=0 and z= 1.74?
Probability Math Sets

04/01/22

Question on probability/sets

You have a basket containing 7 red balls, 5 green balls, and 2 orange balls. You pick 5 balls at random. What is the probability of getting at least one red ball?
Probability Math

04/01/22

Question pertaining to probability/sets

Use the given information to find the indicated probability: P(A U B)= .7, P(B) = .6, P(A∩B) = .5 Find P(A).
Probability Math

03/30/22

Probability of two boys and 2 girls?

In a family with 4 children, what is the probability of having 2 boys and then 2 girls, in that order? (Exclude multiple births and assume all outcomes are equally likely).In a family with 4... more
Probability Statistics

03/29/22

Probability Statistics

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 45 ounces and a standard deviation of 5 ounces.Use the Empirical... more
Probability Statistics

03/29/22

Help with statistics question

The probability density of a random variable X is given in the figure below.From this density, the probability that X > 1.72 or X < 0.14 is: 
Probability Statistics

03/29/22

A plane lands or takes off, on average once per 45 seconds at an airfield. Calculate what is the probability that in a random selected hour we notice:

1) At least 75 landings or take offs?2) Under 100 landings or take offs?
Probability

03/29/22

Probability - Question

Hotel A and B offers 2 types of packages that include lodging only or lodging with breakfast. From a group of 300 tourists, 30 tourist choose Hotel A for lodging only and 120 tourists choose Hotel... more
Probability

03/29/22

Probability - Question

The students in a college need to attend a course and pass three tests. The probability of passing the first test is 0.8 and if a student passes a test, the probability that the student will pass... more

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