Question

Let X represents the number of correct answers having 80 questions. Suppose the probability of the...

Let X represents the number of correct answers having 80 questions. Suppose the probability of the correct answer is 0.7. What is the probability of getting at most 50 correct answers?

0.9672

0.9084

0.0916

0.0328

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

Homework Answers

Answer #1

So the probability of getting atleast 50 correct answers is

0.0916.

​​​​​​

So the probability of getting atleast 50 correct answers is

0.0916.

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
Let X denotes the number of correct answers for part (I) and Y denotes the number...
Let X denotes the number of correct answers for part (I) and Y denotes the number of correct answers in true/false part. Find the joint probability distribution function fX,Y(x,y)
1. The following probability distribution represents the number of people living in a Household (X), and...
1. The following probability distribution represents the number of people living in a Household (X), and the probability of occurrence (P(X)). Compute the Expected Value (mean), the Variance and the Standard Deviation for this random variable. Show Your Calculations for the Mean.     X      1         2        3          4        5                P(X)    .33      .29      .27        .07       .04      2. Use the binomial formula to compute the probability of a student getting 8 correct answers on a 10...
A multiple choice exam consists of 25 questions, each with 4 possible answers. Suppose that a...
A multiple choice exam consists of 25 questions, each with 4 possible answers. Suppose that a student doesn't know the material and simply guesses on each question. Using the CDF command in MINITAB, answer the following questions. 1) What is the probability that they get at least 13 questions correct? 0-0.1 0.1-0.2 0.2-0.3 0.3-0.4 0.4-0.5 0.5-0.6 0.6-0.7 0.7-0.8 0.8-0.9 0.9-1.0
An exam has three questions. You estimate your probability of getting the first question right is...
An exam has three questions. You estimate your probability of getting the first question right is 0.7, your probability of getting the second question right is 0.6, and your probability of getting the third question right is 0.5. Let Y be a random variable that is the number of questions you get right on the exam. What is the distribution ofY?
Assume that the number of multiple-choice questions I get correct out of 100 follows a binomial...
Assume that the number of multiple-choice questions I get correct out of 100 follows a binomial distribution with me just guessing with an equal probability for each answer (A-D). Find the exact probability of me getting 25 or less correct under these assumptions. check if the CLT conditions are satisfied first, then find an approximate probability, assuming that the number of correct answers out of 100 follows a normal distribution.
Problem: Suppose that a couple will have 3 children. Assume that the probability of having a...
Problem: Suppose that a couple will have 3 children. Assume that the probability of having a girl is .487 and the probability of having a boy is .513. Also assume that x is a random variable for the number of girls and find the probability where x is 0, 1, 2, or 3. In order words, answer the following probability questions. What is the probability that none of the three children will be girls? What is the probability that exactly...
Problem: Suppose that a couple will have 3 children. Assume that the probability of having a...
Problem: Suppose that a couple will have 3 children. Assume that the probability of having a girl is .487 and the probability of having a boy is .513. Also assume that x is a random variable for the number of girls and find the probability where x is 0, 1, 2, or 3. In order words, answer the following probability questions. What is the probability that none of the three children will be girls? What is the probability that exactly...
Suppose two people go on a trivia game night adventure. One of them answers questions correctly...
Suppose two people go on a trivia game night adventure. One of them answers questions correctly .45 of the time. That person is asked 64 questions over the span of the night, and the number he gets wrong is random var X. 1) What is probability that he gets at least 20 but less than 33 questions correct 2)He gets $4 per question correct, and loses $2 per wrong. What is the expected value of the winnings with a $50...
Multiple-choice questions each have 3 possible answers, one of which is correct. Assume that you guess...
Multiple-choice questions each have 3 possible answers, one of which is correct. Assume that you guess the answers to 5 such questions. Use the multiplication rule to find the probability that the first four guesses are wrong and the fifth is correct. That is, find P(WWWWC)P(WWWWC), where C denotes a correct answer and W denotes a wrong answer. (round answer to 4 decimal places) P(WWWWC)= What is the probability of getting exactly one correct answer when 5 guesses are made?...
let x be the variable that results from determining the number that represents two and a...
let x be the variable that results from determining the number that represents two and a half times the number of shields minus one and a half times the number of crowns in three launches of a coin. List the elements for the 3 coin tosses and assign a value x from X to each sample point. determine the probability distribution, the mean of the distribution, the aculated distribution and the variance
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT