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Find an article or report on a survey featuring a categorical variable of interest, which mentions sample size and the proportion in the category of interest. Is the sample large enough to produce at least 10 individuals in and out of that category?
Statistics and Probability, Statistics
Suppose a random sample of n = 49 observations is selected from a population that has normal distribution with mean 106 and standard deviation 12. a) Give the mean and the standard deviation of the sample mean X. b) Find ...
You are in charge of numbering the homes in a new subdivision. If we were to ue 0 through 9 as our number to use and we want to have 3 digit house numbers, how many unique homes numbers would we potentially be able to pr ...
A bottle of water is supposed to have 20 ounces. The bottling company has determined that 98% of bottles have the correct amount. Which of the following describes a binomial experiment that would determine the probabilit ...
Imagine that I had two drugs, X and Z. I administered the drugs to people with sleep difficulties for one month. The mean amount of sleep difficulties reported in the drug X group in the past month was 3.44 (SD = 2.34) a ...
42 credit card holders are selected at random. For each, their current credit card balance is recorded. The average for these 42 people is = $600. Assume that the current balance of all credit card holders follows a norm ...
Mort is to pay off a loan of $75,000 with equal payments at the end of every month over 10 years (i.e., 120 months). The ANNUAL effective rate is 5%. Mort decides that he can actually manage to pay double the monthly pay ...
Researchers at the University of Pennsylvania School of Medicine have determined that children under 2 years old who sleep with the lights on have a 35% chance of becoming myopic before they are 16. Children who sleep in ...
Let X be a random variable with range RX = {-1, 0, 1} and let P(X = 1) = P(X = -1) = p/2 for some p ∈ [0, 1]. a) Compute P(X = 0). b) Compute the expectation E[X] and variance Var(X) of X as a function of p, and determin ...
During the period from 2011 through 2015 the annual returns on small U.S. stocks were -3.34 percent, 19.21 percent, 46.95 percent, 2.91 percent, and -4.10 percent, respectively. What would a $1 investment, made at the be ...
A certain process is known to produce non-conforming items 20% of the time. A char- acteristic of the units produced by this process are currently being monitored for quality. Samples of size 15 are selected, and each it ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As