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National association of realtors estimates that 23% of all houses purchased in 2004 were considered investment. If a sample of 800 homes sold in 2004 is obtained what is the probability that between 175 & 200 homes are going to be investment?
Assuming that all other variables are held constant describe how value of z is influenced by each of the following: If alpha level is changed from a = .05 to a = .01. What occurs to boundaries for the critical regions?
Comparison of paired and unpaired samples test - Prepare a brief conclusion statement summarizing your results. What can you tell this MHMR about client satisfaction? What could you suggest they do to improve?
Suppose that Total Revenue = 200Q and Total Cost = 80 + 50Q where Q, the quantity sold, is a random variable with expected value 20 and variance 4.
A psychologist claims that more than 6.3% of the populations suffer from professional due to greate shyness. Categorize the Type II error in this context.
The manufacture of a new compact car claims the miles per gallon (mpg) for the gasoline consumption follow a normal distribution with mean of 25.9 mpg and standard deviation of 9.5 mpg . if 36 such cars are tested , what is the probability the ave..
Construct a 95% confidence interval estimate for the mean yield of five-year certificates of deposit.
Based on these results, a confidence interval for the population mean is found to be μ = 5.7 ± 4.4. Find the degree of confidence.
You are given an annual time series with 40 consecutive values and asked to fit a fifth-order autoregressive model.
What IQ score should one have in order to be eligible for Mensa?
Determine the P value for the indicated hypothesis test with given standardized test statistic, z. Make decision whether to reject H0 for given level of significance deviation.
Set up hypotheses and test to find out whether or not population variance is larger than $100.
Using Sally's estimate of demand that follows, how many T-shirts should she produce for the upcoming event?
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