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High school probability

Recent questions in High school probability

Mylo O'Moore 2021-09-22

If 40% of all commuters ride to wirk in carpools, find the probability that if 8 workers are selected, five will ride in carpools. Define your random variance X and determine X has a binomial or a geometric distribution.

bobbie71G 2021-09-22

A poll is given, showing 65% are in favor of a new building project.
If 9 people are chosen at random, what is the probability that exactly 4 of them favor the new building project?

emancipezN 2021-09-22

a) To Explain: the shape, centre and variability of the distribution of the random variable X-Y.
b) To calculate: the probability that a randomly selected DVD will fit inside randomly selected case.
c) To find: the probability that all DVDs fit in their cases.

Reggie 2021-09-22

Suppose that X has a hypergeometric distribution with $N = 500, n = 50, and K = 100$ . Find $P (X = 10)$ by combining the approximate binomial distribution with the hypergeometric distribution. Can we trust the binomial approximation?

Elleanor Mckenzie 2021-09-22

A binomial probability is given. Write the probability in words. Then, use a continuity correction to convert the binomial probability to a normal distribution probability.
$ P (x < 86 )$
Write the probability in words.

tinfoQ 2021-09-22

The probability of randomly sampling someone in my neighborhood and finding that they own a pet is 0.7. You randomly sample 6 people in my neighborhood. What is the probability that 5 OR MORE of them own a pet in any order? Give your answer as 0.XX

ddaeeric 2021-09-22

Drone Deliveries Based on a Pitney Bowes survey, assume that 42% of consumers are comfortable having drones deliver their purchases. Suppose we want to find the probability that when five consumers are randomly selected, exactly two of them are comfortable with the drones. What is wrong with using the multiplication rule to find the probability of getting two consumers comfortable with drones followed by three consumers not comfortable, as in this calculation: (0.42) (0.42) (0.58) (0.58) (0.58) = 0.0344?

Chaya Galloway 2021-09-22

Find the probability that 3 persons are 65 or older.
Find the probability that 4 persons are 65 or older.

ka1leE 2021-09-22

Suppose a certain breed of piglets have a sex-ratio of 0.54 (that is the probability of male piglets). If 5 piglets were born, what is the probability that 3 of them are male?

a2linetagadaW 2021-09-22

Suppose that during a recent 30-year period, there were eight volcanic eruptions sufficiently powerful to reduce the amount of power generated by solar panels by at least 20% for a period of a year. Call these "Class D20" volcanoes. Suppose that the return on investment from installing solar panels is often calculated over a 25-yearperiod. What is the probability that, during a 25-year period, there will be two or more "Class D20" volcanic eruptions?

Brittney Lord 2021-09-22

What probability distribution might you use to describe the number of COVID19 infections per hospital in Los Angeles?
a. Poisson probability distribution
b. Continuous probability distribution
c. Standard normal distribution
d. Binomial probability distribution
Ten patients participated in a study to see if vitamin C can prevent colds. If each patient has a 45% change of catching a cold, what probability distribution could be used to predict the number patients with colds?
a. Poisson probability distribution
b. Continuous probability distribution
c. Standard normal distribution
d. Binomial probability distribution

Daniaal Sanchez 2021-09-22

Two firms V and W consider bidding on a road-building job, which may or may not be awarded depending on the amounts of the bids. Firm V submits a bid and the probability is 0.8 that it will get the job provided firm W does not bid. The probability is 0.7 that W will be bid, and if it does, the probability that V will get the job is only 0.4 If V gets the job, what is the probability that W did not bid?

Jaya Legge 2021-09-22

Max and Stephen are at a restaurant and will each order either a burger or a pizza. The probability Max orders a burger is 0.6 (i.e. 60%). The probability that Stephen orders a pizza is 0.5. The probability that both Max and Stephen order a burger is 0.34. Answer the following questions. Hint: Let M be the event that Max orders a burger and S be the event that Stephen orders a burger. Calculate the probability that either Max or Stephen (or both) orders a burger.

Joni Kenny 2021-09-21

An oil company is bidding for the rights to drill a well in field A and awell in field B. The probability it will drill a well in field A is 40%. Ifit does, the probability the well will be successful is 45%, The probability it will drill a well in field B is 30% Ifit

Rivka Thorpe 2021-09-21

A binomial probability is given. Write the probability in words. Then, use a continuity correction to convert the binomial probability to a normal distribution probability:
$P (x > 73)$
Write the probability in words.
The probability of getting _ 73 successes.
Which of the following is the normal probability statement that corresponds to the binomial probability statement?
A. $P (72.5 < x < 73.5)$
B. $P (x < 72.5)$
C. $P (x > 72.5)$
D. $P (x < 73.5)$
E. $P (x > 73.5)$

Dillard 2021-09-21

The probability that a man will be alive in 25 years is 3/5, and the probability that his wife will be alive in 25 years is 2/3.
Determine the probability that only the wife will be alive.

smileycellist2 2021-09-21

The probability that a man will be alive in 25 years is 3/5, and the probability that his wife will be alive in 25 years is 2/3.
Determine the probability that both will be alive.

Burhan Hopper 2021-09-21

The weather forecaster says that the probability of rain on Saturday is 20% and the probability of rain on Sunday is 30%. Can you determine the probability of rain over the weekend(Saturday or Sunday)? Explain
If it rains on Saturday, the probability of rain on Sunday is 60%. Can you now determine the probability of rain over the weekend?

York 2021-09-21

Consider two products, A and B, both of which have the same purchase probability. Product A has a population size of 1000 and a 50 percent awareness probability. Product B has a population size of 10,000 and a 5 percent awareness probability. Which product do you expect to sell more? Product A

ka1leE 2021-09-21

A card is drawn randomly from a standart 52-card deck. Find the probability of given event:
The card drawn is a face card (Jack, Queen, or King)

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High school probability

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