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These questions concern how to collect a random sample of 800 airline passengers from 100 particular flights leaving San Francisco International Airport. Assume there are 200 passengers aboard each flight.
1.Describe how to draw the sample as a stratified random sample, using the 100 flights as the strata.
2.Describe how to draw the sample as a cluster random sample, using flights as the cluster.
3.Describe how to draw the sample as a systematic sample from these flights.
What is a discrete random variable and how does it differ from a continuous random variable? Give examples.
Please summarrize, find the most important formulas, and explain a solve problem for each of this statictics topics: A. Simple regression and correlation B. Multiple regression and correlation
Would it be appropriate to say the coefficient of determination (R-squared) is the proportion of variation in Y due to the variation within each of the categories of X?
Calculate the p- value and use it to test H0 versus H a at each of a .10, .05, .01, and .001. d How much evidence is there that the mean composite satisfaction rating exceeds 42?
What is an estimate of the proportion defective for the piston manufacturing process when it is control?
Find the mean and standard deviation for the number of left-handed students in such classes of 25 students.
Findout the probability value for normal distribution. Illustrate the weight of football players is normally distributed with a mean of 200 pounds also a standard deviation of 25 pounds.
Determine the expected value and standard error of the sum of 400 draws?
The DPMO for process is 860. Find the approximate Six Sigma level of the process?
The correlation between the returns on Ceramics Craftsman, Inc., and the returns on the S&P 500 is 0.675. The variance of the returns on Ceramics Craftsman, Inc., is 0.004225, and the variance of the returns on the S&P 500 is 0.001467.
Please give an example on higher wages vs. education level using a sample population of 30 men and women. Compute the measures of central tendency, dispersion, and skew for your data
Suppose they solicit 400 customers one day, and find that 250 of them have a Grayson's card. Assume that 60% of all Grayson's customers have a discount card, what is the probability of getting a sample proportion of at least 250 / 400=0.625?
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