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A company plans to interview 10 recent graduates for possible employment. The company has four positions open. How many groups of four can the company select?
A student has to take seven more courses before she can graduate. If none of the courses are prerequisites to others, how many groups of five courses can she select for the next semester?
1.A population consist of the four numbers 1,2,4 and 5.List all the possible samples of size n=3 which can be drawn with replacement from the population.
Find the following:
a.Population mean
b.Population variance
c.Population standard deviation
d.Mean of the sampling distribution of sample means
e.Variance of the sampling distribution of the sample means
f.Standard deviation of the sampling distribution of sample means
in how many ways can a committee of three men and four woman be formed from a group of twelve men and twelve woman
6 coins are tossed. Let Z be the random variable representing the number of heads that occur. What are the values of the random variables?
In a survey, 30 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $36 and standard deviation of $6. Find the margin of error at a 80% confidence level.
Give your answer to two decimal places.
In a genetics class, 6
students have GREEN eyes, 3
students have BLUE eyes, and 11
have HAZEL eyes. If a single student is picked at random, what is the probability that their eyes are GREEN or HAZEL?
In a genetics class, 6
students have GREEN eyes, 3
students have BLUE eyes, and 11
have HAZEL eyes. If a single student is picked at random, what is the probability that their eyes are GREEN or HAZEL?
