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Forty percent of households say they would fell secure if they had $50,000 in savings. You randomly select 8 households and ask they if they would feel secure if they had $50,000 in savings. Find the probability that the number that say they would feel secure is (a) exactly five, (b) more than five, and (c) at most five.
In each part, identify whether the sample is a stratified random sample or a cluster sample.- A class of 200 students is seated in 10 rows of 20 students per row. Three students are randomly selected from every row.
What is the expected value for the number of parents that a randomly selected child was living with in 2004?- Does the concept of expected value have a meaningful interpretation for this example? Explain.
Again assuming independent trials, what is the probability that one day of rain is followed by two days without rain?
Construct a confidence interval for a level of confidence equal to 95%, we use z values that leave out, in the lower and the upper tails of the normal distribution, an area equal to?
How has the internet and social media like Facebook, and twitter contributed to social awareness, especially in developing countries.
Compare the results to those in Figures. Does it seem reasonable that the information given in Table could be a sample from the population depicted in these figures?
Find the probability that the 3rd club is drawn on the 8th selection. - Find the probability that at least 8 cards are drawn before the 3rd club appears.
Snowmelt runoff rate (M), which serve as a source of water for irrigation, water supply, and power, are a function of the precipitation (P) incident.
The annual report of Dennis Industries cited these primary earnings per common share. What is the arithmetic mean primary earnings per share of common stock and The variance?
5-year treasury bonds yield 5.5. the inflation premium ip is 1.9 and the maturity risk premium mrp on 5-year bonds is
Prove that any sequence that converges in the mean square sense must also converge in probability. Hint: Use Markov's inequality.
The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your rea..
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