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High school probability

Recent questions in High school probability

Marvin Mccormick 2021-09-20

Engineering maths
Calculate probability within both binomially distributed and normally distributed random variables.

pancha3 2021-09-20

Consider a binomial experiment with 16 trials and probability 0.35 of success on a single trial.
(a) Use the binomial distribution to find the probability of exactly 10 successes. (Round your answer to three decimal places.)
(b) Use the normal distribution to approximate the probability of exactly 10 successes. (Round your answer to four decimal places.)
These results are almost exactly the same.

sibuzwaW 2021-09-20

A binomial probaity is given. Write the probably in words. Then, use a continuity correction to convert the binomial probability to a normal distributon probability.
$P (x = 138)$
Write the probability in words.
The probability of getting ? 138 successes.
Which of the fallowing is the normal probability statement that corresponds to the binomial probability statement?
A. $P (x > 137.5)$
B. $P (137.5 < x < 138.5)$
C. $P (x < 137.5)$
D. $P (x > 138.5)$
E. $P (x < 138.5)$

Tabansi 2021-09-20

a) Determine the expected number of convicted drivers out of 15 selected drivers who were arrested for DWI.
b) Determine the probability that exactly 11 out of the 15 independent selected drivers are convicted.
c) Determine the probability that 11 or fewer out of the 15 independent selected drivers are convicted for DWI.

Lennie Carroll 2021-09-20

A firm reports that 25 percent of its accounts receivable from other business firms are overdue due to economic conditions. If an accountant takes a random sample of seven such accounts, determine the probability of each of the following events by use of the formula for binomial probabilities:
(i) none of the accounts is overdue, and, (ii) exactly two accounts are overdue,

permaneceerc 2021-09-20

a) To calculate; the value of $P (X = 17)$
Given:
$n = 20$
$p = 0.85$
b) To calculate; the value of $P (X \leq 12)$

Elleanor Mckenzie 2021-09-20

Find the variance and standard deviation of violent crime.

kuCAu 2021-09-20

Match the binomial probability $P (x < 42)$ with the accurate statement.
1) P(There are less than 42 successes.)
2) P(There are a maximum of 42 successes.)
3) P(There are at least 42 successes.)
4) P(There are more than 42 successes.)

tabita57i 2021-09-19

In a binomial probability question, the phrase "at least 8" consists of which set of numbers?
Group of answer choices
{9, 10, 11, ...}
{0, 1, 2, ..., 7}
{0, 1, 2, ... 8}
{8, 9, 10, ...}

preprekomW 2021-09-19

A Bernoulli process has 4 trials and probability of success 0.31. Find the following probabilities.
1. Exactly 2 successes.
2. Exactly 2 failures.
3. At most 1 success.
4. At least 1 success.
5. At least 1 success and 1 failure.

smileycellist2 2021-09-19

Suppose that a medicine cures 72% of people with a particular disease. If 7 people are sick, what is the probability that at least six of them will be cured by this drug? Explain your reasoning.

Chesley 2021-09-19

A poll reported that 63% of adults were satisfied with the job the major airlines were doing. Suppose 15 adults are selected at random and the number who are satisfied is recorded.
(a) Explain why this is a binomial experiment. Choose the correct answer below.
(b) Find and interpret the probability that exactly 8 of them are satisfied with the airlines.

smileycellist2 2021-09-19

A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment. $n = 5, p = .35, x = 2$
P(2)

vestirme4 2021-09-19

a) To find: The mean number of new infections for the 20 vaccinated children.
To find: The probability that no more than 2 of the 20 children develop infections.
b) To find: The mean number of new infections for none of the 20 are vaccinated children.
To find: The probability that 18 or more of the 20 children develop infections.

Kye 2021-09-19

John plays a roulette 5 times; each time betting on red. The probability of red is $\frac{18}{38} = \frac{9}{19}$ . Let X be the number of wins. Find the expected value (mean) E{X}, the standard deviation, and $P (X = 2)$ .

beljuA 2021-09-19

A coffee connoisseur claims that he can distinguish between a cup of instant coffee and a cup of percolator coffee 75% of the time. It is agreed that his claim will be accepted if he correctly identifies at least 5 of the 6 cups. Find his chances of having the claim i) accepted, ii) rejected, when he does have the ability he claims.

djeljenike 2021-09-19

A study conducted by a research group in a recent year reported that 57% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied. Round the answers to at least four decimal places. What is the probability that five or more of them used their phones for guidance on purchasing decisions?

a2linetagadaW 2021-09-19

A coin is tossed 5 times. Find the probability that all are tails. Find the probability that at most 2 are tails.

tabita57i 2021-09-19

The probability that the San Jose Sharks will win any given game is 0.3694 based on a 13-year win history of 382 wins out of 1034 games played (as of a certain date). An upcoming monthly schedule contains 12 games.
What is the probability that the San Jose Sharks win 5 games in that upcoming month? Let $X =$ number of games won in that upcoming month. (Round your answer to four decimal places.)

sjeikdom0 2021-09-19

a) Probability for two or fewer students would win a prize if companys

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