Question

Suppose that a box contains 7 cameras and that 4 of them are defective. A sample...

Suppose that a box contains 7 cameras and that 4 of them are defective. A sample of 2 cameras is selected at random. Define the random variable X as the number of defective cameras in the sample.

Write the probability distribution for X.

k P(X=k)



What is the expected value of X?    

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose that a box contains 6 pens and that 4 of them are defective. A sample...
Suppose that a box contains 6 pens and that 4 of them are defective. A sample of 2 pens is selected at random without replacement. Define the random variable XX as the number of defective pens in the sample. If necessary, round your answers to three decimal places. Write the probability distribution for XX. xx P(X=xX=x) What is the expected value of X?  
A box contains 7 items, 4 of which are defective. a random sample of 3 items...
A box contains 7 items, 4 of which are defective. a random sample of 3 items are taken from the box. Let X be the number of defective items in the sample. 1.Find the probability mass function of X. 2.Find the mean and the variance of X.
A batch of 125 lightbulbs contains 13 that are defective. If you choose 8 at random...
A batch of 125 lightbulbs contains 13 that are defective. If you choose 8 at random (without replacement), what is the probability that (a) None are defective? (b) Exactly one is defective? (c) More than 2 are defective? whats needed 1) Define a random variable in words. (e.g. X = number of heads observed) 2) Specify the distribution of the random variable including identifying the value(s) of any parameter(s). (e.g. X ∼ Binomial(10, 5)) 3) State the desired probability in...
A box contains 100 light bulbs of which 22 are defective. Suppose 2 light bulbs are...
A box contains 100 light bulbs of which 22 are defective. Suppose 2 light bulbs are selected without replacement. What is the probability that at least one of them is defective? Give your answer to 3 places past the decimal.
A box contains 4 defective and 2 good parts. Two parts are selected from the box...
A box contains 4 defective and 2 good parts. Two parts are selected from the box (without replacement), and it is recorded whether the selected part is defective or good. The probability that the first selected part is defective and the second selected part is good is __________ The probability that exactly one good part is selected is__________________ The probability that at least one defective part is selected is _____________________
Question 1: Suppose that of 6,000 electrical fuses, 5% are defective. Also, suppose that a random...
Question 1: Suppose that of 6,000 electrical fuses, 5% are defective. Also, suppose that a random sample of 10 fuses is selected and consider the random variable X representing the number of defective fuses in the sample. (a) Explain why a binomial distribution is appropriate. (b) What is the probability that at least one of the fuses is defective? (c) What is the probability that fewer than 3 fuses are defective? Question 2: Refer to the setup in Question 1....
A box contains 3 nickels and 4 quarters. two coins are selected at random from the...
A box contains 3 nickels and 4 quarters. two coins are selected at random from the seven coins at the random variable X is a value of the two coins. Give the probability distribution for x.
1. Suppose that a shipment of 120 electronics components contains 10 defective components. If the control...
1. Suppose that a shipment of 120 electronics components contains 10 defective components. If the control engineer selects 6 of these components at random and test them a. What is the probability that exactly 3 of those selected are defective? What is the probability that exactly 4 of those selected are not defective? b. What is the probability that at least 3 of those selected are defective? c. What is the probability that fewer than 4 selected are not defective?
A package contains 4 light bulbs. The following table gives the probability distribution (pdf) of the...
A package contains 4 light bulbs. The following table gives the probability distribution (pdf) of the number of broken bulbs in the package. A random package is selected. Use the table to answer the following questions: pdf for DRV X 0 1 2 3 4 p(x) 0.66 0.20 ? 0.05 0.02 What is the probability that there are exactly 2 defective bulbs in a package? What is the probability that there are at most 2 defective bulbs in a package?...
A batch of 7 lamps contains two defective ones. A restaurant acquires three of these lamps....
A batch of 7 lamps contains two defective ones. A restaurant acquires three of these lamps. Let x be the number of defective lamps. Find the distribution of x. expected value and standard deviation
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT