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An owner of a retail outlet sold and provided service for copying machines. One type of machine, the DW 140 model, needed service often. The owner was interested in the mean time required to service this model, and decided not to carry the model if the mean repair time appeared to be more than 40 minutes. The repairman provided the following 39 times (in minutes):
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We wish to create this mean value interval for selling price with 95% confidence level. Find out the best point estimate (average) for selling price. Critical t-value(s) associated with 95% confidence level.
Find out the mean sum of squares of the treatment in one way ANOVA.The profits of individual traders in three departments, labelled by A, B and C, in a medium sized firm were recorded on one day.
Either summarize your design or give an appropriate layout with table.
Let be the average of the pay you receive for the first and second week. Find the sampling distribution
Determine odds student gets more than 14 questions correct? Determine the odds student gets exactly 12 questions correct?
Is there significant evidence that this production run doesn't meet specifications? Use a 1% level of significance.
Use the marginal probabilities of school quality, school cost or convenience, and other to comment on the most important reason for choosing a school.
Identify the independent and dependent variables, and Construct a nominal, ordinal, and interval level measure for each independent and dependent variable.
Is there evidence that population mean amount is different form 8.17 ounces? (Use a 0.05 level of significance.) with sample standard deviation of 0.051 ounce.
What is the probability that a cereal would be high calorie, given that is low fiber? In other words, what is P (high calorie, given low fiber)?
What fraction of the calls last between 4.2 and 5 minutes?
prevent coronary artery vasoconstriction and the attendant reduction in blood flow to the heart and mechanical function.
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