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In a certain population, 4% of people are color blind. A subset is to be randomlychosen. How large must the subset be if the probability of its containing at least one colorblind person is at least 95%? (Consider the population to be large enough that you canconsider it to be infinite, so the selection can be considered with replacement. In otherwords, don't worry about whether a random sample might sample the same person twice.)
the manager of a video library would like the variance of the waiting times of the customers not to exceed 2.30
1. what information does calculating standard deviation provide? how is the z-score related to standard deviation?2.
Imagine that you have a portfolio of stocks. You want to compare the performance of your stocks to the market as a whole. You learn that the population mean,μ, of stock returns is 7%, and that the population standard deviation, σ, is 2%.
what is the probability that at least 8 of the words on the test are words that the student knows?
with loss function L(θ,a)= w(θ)(θ-a)^2, where w(θ) is a fixed weighted function. Determine the Bayes rule and comment on the role of w(θ) in this problem.
Average number of mosquitoes in pond is 80 per square meter with a standard deviation of 12. If 16 square meters are choses at random for a mosquiot count, find probabilty that the average of those counts is more than 83.0 mosquitoes per square me..
What would be the effect on the optimal solution if the profit for a basketball changed from $12 to $13? What would be the effect if the profit for a football changed from $16 to $15?
Explain the difference between a population and a sample. In which of these is it important to distinguish between the two in order to use the correct formula?
An injury insurance policy pays out $6000 if a person is seriously injured with permanent disability, $1000 if a person is seriously injured without permanent disability and $0 otherwise. hat is the standard deviation of the amount of money paid by..
Interpret the LDA. How many axes were needed to separate the groups? Which groups separate on which axis, and what do the loadings tell you about how they differ (i.e. use the loadings to interpret what the crabs look like on either end of each LD..
Assuming that n = 6 for both samples, calculate each of the sample variances, then calculate the pooled variance. Because the samples are the same size, you should find that the pooled variance is exactly halfway between the two sample variances.
an insurance company knows that in the entire population of millions of homeowners the mean annual loss from fire is
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