Suppose that you randomly draw one card from a standard deck of 52 cards. After writing down which card was drawn, you replace the card, and draw another card. You repeat this process until you have drawn 19 cards in all. What is the probability of drawing at least 7 diamonds? For the experiment above, let X denote the number of diamonds that are drawn. For this random variable, find its expected value and standard deviation. E(X) = 0 =

Assume that the probability of a being born with Genetic Condition B is p = 7/12. A study looks at a random sample of 607 volunteers. Find the most likely number of the 607 volunteers to have Genetic Condition B. (Round answer to one decimal place.) Let X represent the number of volunteers (out of 607) who have Genetic Condition B. Find the standard deviation for the probability distribution of X. (Round answer to two decimal places.) Use the range rule of thumb to find the minimum usual value µ-20 and the maximum usual value p+2o. Enter answer as an interval using square-brackets only with whole numbers. usual values = Question Help: E Written Example Message instructor Submit Question Jump to Answer DELL -> C @ #3 % %24

Assume that, for a given test, the population mean is µ=50 and the population standard deviation is σ=10. What is the probability that your sample mean will be 54 or higher, if you have a randomly drawn sample size of n=4?

A normal population has a mean of of 60 and standard deviation of 12. A random sample of 9 is selected . The probability that sample mean is greater than 63 is: Select one: a.0.2266 b. 0.7266 c.0.75 d.0.3427 e.0.2734

The probability of success is 0.725. You take a sample of 760. for a sample of size 760, what is the typical deviation from the expected number of successes?

When practicing basketball, Rachel has a 67% chance of making a free throw. She shoots 12 free throws. Let the random variable X be the number of free throws she makes. Find the probability she makes exactly 5 free throws. Give your answer to at least three nonzero decimal places. What is the expected value of X. Interpret this value.

Assume that the probability of a being born with Genetic Condition B is p = 7/60. A study looks at a random sample of 826 volunteers. Find the most likely number of the 826 volunteers to have Genetic Condition B. (Round answer to one decimal place.) H = Let X represent the number of volunteers (out of 826) who have Genetic Condition B. Find the standard deviation for the probability distribution of X. (Round answer to two ecimal places.) 0 = Use the range rule of thumb to find the minimum usual value µ-20 and the maximum usual value μ+2o. Enter answer as an interval using square-brackets only with whole numbers. usual values =

A random sample of 100 items is selected from a population of size 350. What is the probability that the sample mean will exceed 200 if the population mean is 195 and the population standard deviation equals 20? Use the finite population correction factor and show work. answers: a-.0016 b. .1587 c. 9984 d. .8413

You play a game of chance in which you can either win or lose (there are no other possibilities). The probability of winning is 0.22. What is the standard deviation of X, where X is the number of times one needs to play a game until one gets the first win?

Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?