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A box contains 6 red and 9 green marbles. You reach in and remove 3 marbles all at once.
(a) Find the probability that these 3 marbles are all red. (Enter your answer as a fraction.)
(b) Find the probability that these 3 marbles are all of the same color. (Enter your answer as a fraction.)
Four couples, each consisting of one man and one woman, are seated at a circular table. Assuming that each different order is equally likely, find the probability that:
a hair salon did a survey of 360 customers regarding satisfaction with service an type of customer. a walk-in customer
question 1 in a sample of 150 auto occupants 86 wore seatbelts. in a sample of 200 truck occupants 74 wore seatbelts.
assume that matched pairs of data result in the given number of signs when the value of the second variable is
a control chart for fraction nonconforming indicates that the current process average is 0.03. the sample size is
if you draw 7 cards at random from a standard deck of 52 cards what is the probability that you will get exactly two
A sample of 3000 observations has a mean of 85 and a standard deviation of 10. The distribution is bell-shaped. Using the empirical rule, find what percentage of the observations fall in the intervals
Evidence of statistical interaction or effect modification. What is the odds ratio for diabetes in a man aged 65 compared with a woman aged 60 (both have the same waist circumference)?
What is the probability of selecting 10 production employee at random on a hot summer day and finding that none of them are absent.
For random samples of size n = 25 selected from a normal distribution with a mean of m = 50 and a standard deviation of s =20, find each of the following: The range of sample means that defines the middle 95% of the distribution of sample means.
It is said that happy and healthy workers are efficient and productive. A company that manufactures exercising machines wanted to know the percentage of large companies that provide on site health club facilities. A sample of 240 such companies s..
An investment counselor would like to meet with 12 of his clients on Monday, but he has time for only 8 appointments. How many different combinations of the clients could be considered for inclusion into his limited schedule for that day?
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