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Q1) What method of data collection would you use to gather date for study of salaries of college professors at a particular college?
a) Take a census
b) Do an experiment
c) Use a simulation
d) Use sampling
Q2) After polling every 8th graduate, a major university estimated annual salary of its alumni to be $103,000. What sampling technique was used?
a) Systematic
b) Stratified
c) Cluster
d) Convenience
e) random
Q3) Assume the standard deviation is 12.4. Determine the variance?
a) 3.52
b) 12.4
c) 14.6
d) 153.76
Evaluate the mean, the median, and the mode of the salaries. Which best describes a typical salary and Evaluate the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.
Give the Z score for person who scores (a) 340, (b) 310, and (c) 260. Give the raw scores for persons whose Z score on this test are (d) 2.4, (e) 1.5, (f) o, and (g) -4.5
Find a 99% confidence interval for the population mean number of weekly miles.
Develop percent frequency distribution and construct bar chart and pie chart.
Randomly select a sample of five rental agencies. Start with row two and column two. The number is 90935. Use the first two numbers starting with 90.
Create the corresponding decision tree and make recommendations.
Determine the distribution of X? Determine its parameters?
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The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.
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Write Cumulative distribution function.Find the cumulative distribution function F(x).
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