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Your task is to interview a representative sample of attendees for the large concert venue where you work. The new season includes 200 live concerts featuring all types of musicians and musical groups. Since neither the number of attendees nor their descriptive characteristics are known in advance, you decide on a nonprobability sampling. Based on past seating configurations, you can calculate the number of tickets that will be available for each of the 200 concerts. Thus, collectively, you will know the number of possible attendees for each type of music. From attendance research conducted at concerts held during the previous two years, you can obtain gender data on attendees by type of music.
How would you conduct a reasonable reliable nonprobability sample?
Which sampling method (simple Random, Systematic, Stratified, etc.) would you suggest and why?
Basic Statistics problem
In studying the performance of the comapany's stock investments over the past year, the research manager of a mutual fund company finds that only 43% of the stocks returned more than the rate that had been expected at the beginning of the year.
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
A Manager needs to decide between two machines to put into market following a Weibull distribution. Machine X test unit cost $3000 with beta=3 and theta=500 Machine Y test unit cost $2000 with beta=3 and theta=400
Explain in your own words why the test statistic for Goodness-of-Fit is similar to the calculation for Population Standard Deviation.
What happens to the confidence interval and the power of the test at a particular point of interest. As one increases the sample size of a test, all else remaining the same.
Sixty percent of the families in a certain community own their own car, thirty percent own their own homes, and twenty percent own both their own home and own car. If a family in the community is randomly chosen, what is the probability that they ..
At a 0.05 level of significance, does this data show that 2 year college students and private unversity students work an equivalent amount of time?
A certain airplane has 2 independent alternators to provide electrical power. The probability that a given alternator will fail on a 1 hour flight is 0.02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the othe..
Which of the examples below represent the Ratio level of scaling?
Use MegaStat's output for simple linear regression to determine the regression equation
Test the proportions of yellow fire trucks have a significantly lower accident rate.
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