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Show that the probability mass function p() of a numerical valued random phenomenon can be positive at no more than a countable infinity of points.
Dogs. A census by the county dog control officer found that 18% of homes kept one dog as a pet, 4% had two dogs, and 1% had three or more.
I'm non mathematics background, the basics of statics, I'm wishing to learn mean, median, mode and calculation of Standard Deviation, root values.
If 25 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is less than 44.24 tons. Assume that the variable is normally distributed.
1.an srs of 20 third grade children is selected in chicago and each is given a test to measure their reading ability.
Suppose that the random variable X follows a binomial distribution with p = 0.70 and n = 8.
A consulting group believes that 70% of the people in a certain county are satis?ed with their health coverage. Assuming that this is true, ?nd the probability that in a random sample of 15 people from the county:
Examine the relative frequency histogram for nicotine content. Use the rule of thumb to describe the data set.- Locate y‾ and s on the printout, then compute the interval y‾ ± 2x.
The supervisor of an orange juice bottling company is considering the purchase of a new machine to bottle 16 fluid ounces (473 mL) bottles of 100% pure orange juice and wants an estimate of the difference in the mean filling weights between the ne..
In a sample of 30 randomly selected women, it was found that their mean height was 63.4 inches. From previous studies, it is assumed that the standard deviation is 2.4.
a) In the context of the problem, which of the following interpretations is correct, if any? A. We're 95% confident that the mean length of eggs for the New Zealand bird population is between 38 mm and 53 mm. B. 95% of all birds in New Zealand have e..
Once R is selected, the sum is compounded instantaneously for a year so that X= 50000 e^R dollars is the amount at the end of that year. Find the distribution function and the p.d.f. of X.
The probability that Luis will pass his statistics test is 0.44. What is the probability that he will fail his statistics test?
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