An exam has 39 questions on it and students need to answer 26 of the questions. In how many ways can this be done if the first 5 questions and exactly 6 of the last 8 questions must be answered...
An exam has 39 questions on it and students need to answer 26 of the questions. In how many ways can this be done if the first 5 questions and exactly 6 of the last 8 questions must be answered...
What is the probability that you get AT MOST 25 heads? p=0.569 1-p = 0.431 n = 27
There are 28 students in the class, and the test has 100 questions. Each question has four possible answers. a. After reading carefully reading the scenario, determine the number of...
involving the selection of two students from a committee of students. Assume that the committee is made up of 2 males and 5 females. Two are selected at random, and a random variable X is defined...
The percentage of the general population that has each blood type is shown in the following table. Determine the probability distribution associated with these data. Blood Type...
Assume that you have 10 mice in the cage: 4 white males, 3 gray females, and 3 gray males. Two mice are selected simultaneously and at random, and their colors are noted. What is the probability...
If a player rolls two dice and gets a sum of 2 or 12, she wins $20. If the person gets a 7, she wins $5. The cost to play the game is $3. Find the expectation of the game.
If I have 100 different flavors, how many possible different flavors can be created?
A certain drug was developed, tested, and found to be effective 80% of the time. Find the probability of successfully administering the drug to at least 10 out of 11 patients. (Round your answer to...
These problems are usually easy, but I am totally blanking on this. I've tried a handful of ways and got it wrong.
A company manufactures tires at a cost of $40 each. The following are probabilities of defective tires in a given production run: probability of no defective tires: 10%; probability of 1% defective...
A survey of adults found that 58% oppose raising the eligibility age for a medical program. You randomly select 96 adults and ask them how they feel about raising the eligibility age for a medical...
1. Use the frequency distribution to find the expected value (mean), variance, and the standard deviation. Number of downloads (X) 27 28 30 31 32 Probability (P(X)) 0.15 0.2 0.3 0.25 0.1 2...
Out of all of the 2010 murder cases, 28.8% killed by family members, 53% by acquaintance and the remainder by stranger. What's probability that a randomly selected murder victim was killed by stranger...
In a recent survey, 15 people preferred milk, 27 people preferred coffee and 18 peoplepreferred juice as their primary drink for breakfast. If a person is selected at random, find theprobability that...
In a game you bet $1 and toss two coins. If two heads come up, you win a profit of 75 cents. If two tails come up, no one wins anything. Otherwise, you lose your dollar. What is your expected value...
What is the probability of rolling a 4 on a ten sided die 5 times in a row? I don't think the answer is as simple as 1 in 10,000 which would be a ten percent chance 5 times.
Thanks! 2. You have $10,000 to invest. After some investigating, you found two investment opportunities. Bond A has a return of 6.5% with a default rate of 2%. Bond B has a return of...
Assume that n = 13, and p = [ 4/5]. Find the probability of at least 2 successes and at least 1 failure.
Suppose that Z is a standard normal random variable. Compute Pr(Z<−1.54). (If needed, round answers to 3 decimal places)