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If you were using the relative frequency of an event to estimate the probablility of the event, would it be better to use 100 trials or 400 trials according to the law of large numbers?
a) 100
b) 400
Why might supposition of normal population be doubtful? Problem arises when?
National average for 2-year leases is 30,000 miles. Select the suitable hypothesis.
Company are interested in how a new spaghetti sauce made from green tomatoes (and green in color) will compare to their traditional red spaghetti sauce. They are worried that the green color will adversely affect the tastiness scores.
What is the distribution of X? State its mean and variance.
How is data screening related to the assumptions of the statistic you will choose to analyze your data?
At the .05 level of significance, can we conclude the Middletown students stayed in their districts less time than the Brockton students? Use the five-step hypothesis testing procedure.
Number of miles flown in a One- year period by the sample of "frequent flyers" was recorded. Is this a grouped or an ungrouped frequency distribution?
Use a 0.05 significance level to test the claim that king-size cigarettes with filters have a lower mean amount of nicotine than the mean amount of nicotine in non-filtered king-size cigarettes.
Evaluate the data below using the Kruskal - Wallis Nonparametric Hypothesis Test. Explain why you chose this particular nonparametric test to analyze your data.
Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
At α = .05, is there a difference in variances? Illustrate all steps clearly, including illustration of the decision rule.
There are 500 employees in a firm, 45% are female. A sample of 60 employees is selected randomly. (a) Determine the standard error of the proportion.
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