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Find mean, median, mode, standard deviation, and variance for each distribution.
Prepare a scatterplot of Price against Capacity. What can you say about the direction of the association? What can you say about the form of the relationship?
A recent study indicated that 29% of the 100 women over age 55 in the study were widows. If no estimate of the sample proportion is available how large should the sample be?
mean of peak expiratory flow for children without asthma is 306. investigator wants to see whether children with
an insurance policy is written to cover a loss x where x has a uniform distribution on 0 1000. at what level must a
Produced weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams. Determine the mean and the standard deviation.
Your manager is asking for the average viscosity of a product that you produce in a batch process. Recorded below are the 12 most recent values, taken from consecutive batches. State any assumptions, and clearly show the calculations that are requ..
Scores on test form normal distribution with mean of µ = 150 and a standard deviation of σ = 25. Mean for sample is M = 158. Compute test statistics (z score) for sample.
The Rutter Nursery Company packages pine bark in 50-pond bags. From a long history, the packaging department reports that the distribution is normal. At the end of each day Jeff Rutter
At the 0,05 level, can we conclude that women think men are less kind, gentle, and thoughtful in the later survey compared with the earlier one?
The Appliance Center sells a variety of electronics equipments and home appliances. For last four years the following quarterly sales (in $ millions) were recorded.
I did a study correlating net profit per location with expenditures on an in-house promotion, and got a correlation of about .15, and that was received very well.
The board of directors of Saner Automatic Door Company consists of 12 members, 3 of whom are women.
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