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For a study that consists of personal interviews with participants (rather than mail or phone surveys), explain why simple random sampling might be less practical than some other sampling methods.
A. A simple random sample requires selecting each person one at a time
B. A simple random sample does not work with personal interviews
C. A simple random sample could be influenced by selections biases
D. A simple random sample would be less practical for personal interviews because of travel costs (unless the interviews are paid to go to a central interviewing location.)
Last week Sarah had exams in Math and in Spanish. On the Math exam, the mean was u, = 30 with a = 5, and Sarah had a score of X - 45. On the Spanish exam, the mean was u, = 60 with 0 = 6 and Sarah had a score of X = 65. For which class must Sarah ..
Why is cumulative relative frequency distribution so much more informative that just relative frequency distribution? Use examples to explain these differences.
Solve the problem: According to police sources a car with a certain protection system will be recovered 94% of the time. Find the probability that 4 of 8 stolen cars will be recovered.
Compute the mode, median and mean for the college students and compute the mode, median and mean for the parents' data
What percentage of bottles can we expect to have a volume less than 32 oz?
In what sense is this business problem? A societal problem? An individual problem?
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
If probability of drawing a face card is 0.625. Determine the probability of not drawing a face card.
Write the hypothesis statement. What distribution are you using?
What fraction of the calls last between 4.2 and 5 minutes?
If writing scores for population have standard deviation of s = 20, does sample give sufficient evidence to conclude that new composition course has significant effect? Suppose a two tailed test with a = 0.05.
Solve problem graphically1. Describe optimal solution and objective function value in context of the problem.
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