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Using Area of Residence (Area A or Area B) as my stratification factor, explain, in detail, how you would select a sample of 60 inhabitants by using stratified random sampling. Ensure that you state how many inhabitants from each Area of Residence will be selected and that relevant calculations are shown. State the benefits and the drawbacks of using stratified random sampling in this situation.
Suppose that a study based on a sample from a targeted population shows that people at a pizza restaurant are hungrier than people at a coffee shop. Make an interference based on the results of the study.
Based on a scatter diagram, would you estimate the linear correlation coefficient to be:
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
For a normal population with u. = 80 and a = 20 which of the following samples is least likely to be obtained?
Hypothesis test for dependent samples and Has satisfaction with MHMR services changed since the January survey
Find the t c for a 90% confidence level with a sample size of 18.
Determine the number of successes suggested by the given statement.
Suppose that a random sample of 800 early replacement buyers yields a mean number of dealers visited of 1 = 3.3, and that a random sample of 500 late replacement buyers yields a mean number of dealers visited of 2= 4.5.
At a .10 level of significance, use Stat Tools (or Excel) to test the sponsors' hypothesis. State the null and the alternative hypotheses and the decision rule. Finally, discuss your findings.
Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables
Tom works the night shift at a gas station on the edge of Champaign. One night he mixed 3 stale doughnuts in with 13 fresh doughnuts. That night 6 customers bought one doughnut each, selecting them at random. What is the probability that at least ..
By using the maximax criterion, what decision should be made by the decision maker?
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