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High school probability

Recent questions in High school probability

permaneceerc 2021-09-15

The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Suppose the batch contains 1% defective syringes.
Find ? (in terms of the number of syringes).
What is the expected number of defective syringes the inspector will find?
What is the probability that the batch will be accepted?
Find ? (in terms of the number of syringes)

arenceabigns 2021-09-15

The Mean for a Binomial Distribution is
A) p
B) q
C) np
D) npq

Trent Carpenter 2021-09-15

A geological study indicates that an exploratory oil well should strike oil with probability of 0.2. What is the probability that
A. The first strike comes on the third well drilled?
B. The third strike comes on the seventh well drilled?
C. What assumptions did you make to obtain the answers to parts A and B?
D. Find the mean and variant of the number of wells that must be drilled if the company wants to set up three producing wells.

boitshupoO 2021-09-15

Suppose that 30% of all college freshmen gain weight. A sample of 20 selected randomly. What is the probability that exactly 6 freshmen gain weight?

e1s2kat26 2021-09-15

To find: The condition, mean and standard deviation for a binomial random variable approximation to normal.

Nann 2021-09-15

A manufacturing machine has a 3% defect rate.
If 4 items are chosen at random, what is the probability that at least one will have a defect?

BenoguigoliB 2021-09-15

a) Determine the probability that exactly 2 out of 8 randomly selected Americans own a cat.
b) Determine the probability that more than 3 out of 8 randomly selected Americans own a cat.

coexpennan 2021-09-15

Five out of 25 students at AUA Applied Stat class are Lazio fans. Suppose that the number of Lazio fans among Applied Stat class follows binomial distribution. Find the probability that if you randomly chose five students none of them will be Lazio fan (round to 3 decimal places).

waigaK 2021-09-15

The 30 students in MATH215A are invited to play “My Deal or NO DEAL!!” Each student will get to select one of 25 cases prior to any being opened. (It’s perfectly acceptable for two or more people to select the same case). After the cases have been selected I, as the host, will start opening the cases one by one eliminating those who didn’t select the case with the $1,000,000. If exactly 4 people selected the million dollar case, everyone will share the spoils. What is the probability that exactly 4 of you will select the correct case?

Cheyanne Leigh 2021-09-15

Assume that 27% of consumers are comfortable having drones deliver their items based on a poll. Let's say we want to determine the likelihood that, out of four randomly chosen consumers, exactly two are okay with drone deliveries. The values of n, x, p, and q should be known. n has a value of?

Chesley 2021-09-15

1. A binomial distribution is the probability distribution of the type of probability experiment that has the three characteristic below:
2. The random variable X of a binomial probability experiment is ....
3. The mean $μ$ of a binomial distribution with n trials and the probability of success $p =$ ....
4. The variance $σ^{2} =$ ..... and the standard deviation $σ =$ .......

ringearV 2021-09-15

If a seed is planted, it has a 80% chance of growing into a healthy plant.
If 7 seeds are planted, what is the probability that exactly 3 don't grow?

Ava-May Nelson 2021-09-15

Consider an acceptance sampling plan with $n = 20 and c = 0$ . Compute the producer’s risk for each of the following cases.
a. The lot has a defect rate of 2%

Armorikam 2021-09-15

A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment.
$n = 6, p = 0.3, x = 4$
$P (4) =$

Nann 2021-09-15

Use the normal approximation to the binomial distribution to determine (to four decimals) the probability of getting 7 heads and 7 tails in 14 flips of a balanced coin. To determine the error of this approximation, also consult the "Statistical Tables" table of binomial probabilities.

Anonym 2021-09-15

Calculate the likelihood that X will succeed using Table B in appendix A.
a. $n = 15, p = 0.80, X = 12$
b. $n = 20, p = 0.05, X = 0$
c. $n = 20, p = 0.50, X = 10$
d. $n = 16, p = 0.20, X = 3$

Tabansi 2021-09-15

Solve the following problems applying the Binomial distribuction:
What is the probability of obtaining at most twice the number 4, in a 10 throw of a 6-sided die?
In the case of the die. We want the probability of obtaining exactly 2 threes in 4 throws.

vazelinahS 2021-09-14

Can be given binomail probability approximated by the normal probability destribution? $p = .20$ and $n = 100$

a2linetagadaW 2021-09-14

An urn contains pink and green flowers.
Two flowers are chosen without replacement.
The probability of selecting a pink flower and then a green flower is 0.73, and the probability of selecting a pink flower on the first draw is 0.24.
What is the probability of selecting a green flower on the second draw, given that the first flower drawn was pink?

Ernstfalld 2021-09-14

Assume that a procedure yields a binomial distribution with $n = 33$ trials and a probability of success of $p = 0.10$ Use a binomial probability table to find the probability that the number of successes x is exactly 22. Using a binomial probability table

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