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For which of the following is a binomial distribution appropriate for the variable X?
Which of the variables meet the conditions for a binomial distribution? Select all that apply.
The probability that a person in the United States has type O+ blood is 40%. Three unrelated Americans are selected at random. What is the probability that at least two out of the three have blood t
When a survey calls residential telephone numbers at random, only 25% of the calls reach a live person. You watch the random dialing machine make 17 calls.
A rapid test for the presence in the blood of antibodies to HIV, the virus that causes AIDS, gives a positive result with probability about 0.004 when a person who is free of HIV antibodies is test
How many times would you expect to be able to honk the horn with a 50% probability of not having any failures? What is the expected number of times you hit the horn before the fourth failure?
How do I find the percentage of scores that fall at or below a person with a score of 7? And percentage of scores that fall above a person with a score of 6?
Suppose each of n balls labeled 1 to n is placed in one of n boxes labeled 1 to n. Assume the n placements are made independently and uniformly at random (so each box can contain more than one ball)
Packets arrive at a router at the rate of 1000 packets per second. In an experiment, the number of arriving packets are counted over a period of 2 milliseconds.
Using the table of continuous data below, how would I compute the 25th, 50th, and 75th percentiles?
Show that the distribution of a random variable X with possible values 0, 1, and 2 is determined by /-li = E(X) and /-l2 = E(X2), by finding a formula for P(X = x) in terms of /-li and /-l2, x = 0,
How would I go about creating the following frequency distributions for the scores? Ungrouped, relative, cumulative, and cumulative relative frequency distributions. I want to include exact limits i
A fair coin is flipped until heads or tails have occurred twice in a row. Find the expected number of flips. Show all work.
Assume that I have a variable with a sample mean = 10, and sample n = 50. And let's say that the population standard deviation for the variable = 3. How would I create a 95% confidence interval arou
For a parallel structure of identical components, the system can succeed if at least one of the components succeeds. Assume that components fail independently of each other and that each component h
The article "Evaluation of Criteria for Setting Speed Limits on Gravel Roads" measured speeds of vehicles on several roads in the state of Kansas. On South Cedar Niles, 73 vehicles were observed, an
What proportion of sales personnel is expected to sell at least 5 and at most 12 cars during the 40-day period? What is the chance to sell fewer than 12 cars during the 40-day period?
Tasks are sent to a supercomputer at an average rate of 6 tasks per minute. Their arrivals are modeled by a Binomial counting process with 2-second frames.
Compute the variance, standard deviation, range, and coefficient of variation. Are the data skewed? If so, how?
Determine the FCF (Free Cash Flow) for the 5 year forecast period. Determine the present value of this 5 year forecast period.
The following is a series of annual sales (in millions of dollars) over an 11-year period (2000 to 2010): Year: 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Sales: 13.0 17.0 19.0 20.0 20.5
A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 294 lb. and a variance of 2401. (Give your answers correct to four decimal places.)
A new cellular phone billing plan cost $15 per month plus $1 for each minute of use. If the number of minutes you use the phone in a month is a geometric random variable with expected value 1/p, wha