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The city of Lewisville has 65,246 adults of which 33,064 are men. A simple random sample of size 1000 is taken of this city. Find the probability that at least 500 people in the sample are men.
What would be the correct null and alternative hypothesis for the following situation: The sample has a mean of 72.3 mph and a standard deviation of 7.4 mph. Use a 0.05 significance level to test the claim that the mean speed of all cars is greate..
Children per family for certain community from census data. Recognize random variable of interest, find out whether is a discrete or continuos, and write its possible values.
Suppose that 55% of all adults with children favor school voucher programs. A sample of 8 adults with children is taken. What is the probability that at least 7 of the adults favor school vouchers?
Compute the Kappa statistic and its standard error regarding reproducibility of the diagnosis of dyspnea in the clinic.
Calculate P value? Calculate critical value?
Total square footage (X4) (columns in the data file are in that order). (a) Obtain the scatter plot matrix and the correlation matrix. Interpret these and state your principal findings.
nearly every aspect of our lives is impact by waiting on lines queues including grocery stores waiting at red lights
A sample of charge accounts at a local drug store revealed the following frequency distribution of unpaid balances. Determine the standard deviation. Compute the coefficient of variation.
Use mathematical induction to prove that : 1*2+2*3+3*4+....+n(n+1)(n+2)/3 for all n >_1 and (2) Find d=gcd (721 , 448), find integers s and t with d=721s + 448t, and put the fraction 448/721 in lowest terms.
question the manufacturer of a steel-belted radial tire claims that the mean mileage the tire can be driven before the
The standard deviation of the population weight losses is about 10 pounds. How large a sample should he take to estimate the mean weight loss to within 2 pounds, with 95% confidence?
Each patient also submits the blood sample and their glucose tolerance status is determined. Determine the sensitivity of screening test?
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