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Assume you roll fair four-sided (Tetrahedral) die and a fair six sided die. Are the events getting doubles (Same value on each die) and getting a sum of 4 mutually exclusive? Why?
The median of distribution of continuous random variable X is the value 0.5 such that P(X <= ?0.5) = 0.5. Determine the median of the Uniform Distribution on the interval (a, b)?
The average age of trees in large local park is 60 years with standard deviation of 2.2 years. A simple random sample of 400 trees is chosen, and sample mean age of such trees is computed.
Determine the theoretical steps in the development of a sampling distribution for an independent t-test of the amount of beer consumed by 30 Belgian soccer fans and 30 American soccer fans.
Suppose that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses, test statistic, P-value, and stat
In a shipment of 12 air conditioners, there are 3 with defective thermostats. Two air conditioners will be selected at random and inspected one after the other. Find the probability that
A car salesman offers a prospective car buyer choice of 4 vehicles, each has option for four doors or two doors, all of which come with either standard or automatic transmission. How many different
Describe the difference between the rejection region and the p-value approach to hypothesis testing. What are some advantages and disadvantages to both?
Determine the probability that the piston chosen from Machine 1 is unsatisfactory and the piston chosen from Machine 2 is satisfactory ? Do not round your answer.
You want to test whether the proportion of albino gorillas in the population of gorillas is 30% or less. Random sample of 48 gorillas is collected,16 are albino. What are the null and alternative hy
Throughout the summer months of June, July, and August, an average of 5 marriages per month take place in small city. Supposing that these marriages take place randomly and independently of one ano
Make a lognormal plot and determine the two parameters. Find out which of the two distributions provides the best fit to the data, using the coefficient of determination as a criterion.
White mice are employed to determine the effectiveness of a certain drug. If only 50% of the mice react to the drug, how many mice should be used to ensure that at least one of the mice will give an
How many pretzels should Annie's produce each and every day so that the probability of running out of pretzels is .01? Determine the largest number of pretzels Annie's can make every day to arrive
Compute the probability that exactly two of the selected bulbs are rated 75-W? Calculate the probability that all three of the selected bulbs have the same rating? Determine the probability that one b
Mensa is organization whose members possess IQ's in the top 2%. It is reasonable to suppose IQ is normally distributed with the mean 100 and standard deviation of 16. Determine the IQ needed to be a
Determine the probability that she receives at least 2 complaint calls in one day. Determine the expected number of complaint calls in one month (assume a month has 30 days).
The scheduling manager for certain hydro-power utility company knows that there're average of 12 emergency calls about power failures per month. Suppose that a month includes 30 days.
Throughout the 2013-2014 regular season, Brian Roberts of Charlotte Hornets had a freethrow shooting percentage was 0.940.
Describe the probability distribution that can be appropriately used to find probabilities of X. Compute the probability that 20 of the most recently captured moose are tagged?
Determine the probability that he catches at least 2 illegitimate deductions. Determine the standard deviation of the number of illegitimate deductions he will catch.
John is trying to choose fiscally responsible stocks, and has narrowed his investment choices down to 5 stocks. Suppose that 3 of the stocks will fail, and that John will randomly choose 2 stocks t
Find the indicate IQ score x of the area to the left with area is 0.1587 (z is negative) and standard deviation is 15, mean is 100
On Monday all registered students attended class. On Tuesday, there was 16.12% reduce in attendance and only 26 students were present. How many students (total) are registered in the class?
Suggest a group of 30 football players from which 8 are to be chosen as quarterbacks 7 as fullbacks, and 4 as centers. In how many manners can this selection be made? Now assume that the group of 30