# High school probability questions and answers

Recent questions in High school probability
tuehanhyd8ml 2022-04-06 Answered

### The same three digit prefix is used for all of the telephone numbers in a small town. How many different telephone numbers are possible by changing only the last four digits?

Noelle Wright 2022-04-06 Answered

### What is the value of 5P4?

Jasmine Calara 2022-04-04 Answered

### The table below shows the probability of a machine manufacturing defective parts in one day.      Find the variance. Number of items012345Probability0.740.170.040.0250.10.015

2022-04-03 Answered

### A standard pair of six sided dice is rolled. What is the probability of rolling a sum greater than 3?

tammycordero13 2022-04-03 Answered

### Given P(A) = 0.92, P(B) = 0.33, and P(A or B) = 0.40, are events A and B mutually exclusive?

nico.baniqued 2022-04-02

### What is the probability that a randomly selected student is a female? *1 pointA.11/3B.77/12C.55/11D.88/15

hannahkatesumile 2022-04-01
abdulzareena401 2022-04-01

### Statistics and ProbabilityThe joint probability distribution of two random variables X and Y is given in the following table.  Y   -12X-10.10.1 -20.50.11. Calculate the marginal probability distribution of X.2. Calculate the marginal probability distribution of Y.3. Calculate E( X ) and s.d.( X ).4. Calculate E( Y ) and s.d.( Y )5. Calculate cov(X, Y) and corr(X, Y).6. Calculate the conditional probability distribution of X given Y = -1.7. Calculate the conditional probability distribution of X given Y = 2.8. Calculate E( X | Y = -1 ) and var( X | Y = -1 ).9. Calculate E( X | Y = 2 ) and var( X | Y = 2 ).10. Verify the Law of Iterated Expectations E(X)=E[E(X|Y)] by using your previous results.11. Are X and Y independent random variables? Justify your answer based on answers to the preceding questions.

dylanbradleytjokro 2022-03-30 Answered

2022-03-29

2022-03-28

### If n = 20 and p = 0.70, then P(X < 2)  is

Sinovuyo Ncapayi 2022-03-28

### If n=20 and p=0.70, then P(X<2) is

Rami Masri 2022-03-27

### You measure weekly sales. You can assume that weekly sales are normally distributed with mean 60 and standard deviation 18, and that weekly sales are independent across weeks. What is the probability that AVERAGE WEEKLY sales over the next 4 weeks are below 66 in 4 decimal positions?

2022-03-27
Daniella Bonanno 2022-03-26 Answered

### In a loan database, there are 11 loans to clients with 19 years of business experience. Also, there are 77 loans made to clients with a College education. In the database there are 82 loans to clients with 19 years of experience or who have a College education. How many loans were made to clients with a College education who also had 19 years of experience?

ESTREBINIRO , 2022-03-22 Answered

### 1. Random sample of size 4 are drawn from the finite population which consists of the numbers 2,3,7,8,and 10. a. What is the population mean, population variance and population standard deviation of the given data? b. What is the sampling distribution of the sample means for a sample of size 2 which can be drawn without replacement from the given population? c. What is the mean, variance and standard deviation of the samp

ROSALES Naomi 2022-03-22
ROSALES Naomi 2022-03-22
2022-03-22 Answered
2022-03-21 Answered

### If two events A and B are independent and you knowthat P(A) = 0.3, what is the value of P(A | B)?

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