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Data are said to be lognormal distribution with paramters mu and sigma is the natural logarithms of the data are normally distributed with mean mu and standard deviation sigma. Use the Kolmogorov-Smirnov test with significance level 0.05 to decide whether the folowwing lifetimes (in days) of a sample of cancer bearing mice that have been treated with a certain cancer therapy might come from a lognormal distribtuion with paramaters mu=3 and sigma=4.
Data: 24 12 35 40 16 10 12 30 38 14 22 18
Millie and Senta Meter have recently taken Pre and Post test in achievement. The test were normally distributed. Millie's percentile rank changed from 57.93 to 77.34. Senta's changed from 1.07 to 4.95.
The men took an average of 20.5 hours per year of personal time with a standard deviation of 2.75 hours. What is the pooled estimate of the variance? Round to three decimal places.
Suppose that we generate a random sample from a given distribution. If it is desired that the probability that the sample mean will be within 2 standard deviations of the mean of the distribution is at least .99, how large should the sample size b..
ll subjects in the study were questioned about lifestyle factors including alcohol, tea, and coffee consumption. The resulting data.
At the 0.05 significance level, can we conclude that equal numbers of Canadian retirees living in Hawaii came from each of the four cities?
The ability to pay attention and the level of stimulation in the environment. how would a researcher work around this issue?
The manufacturer of a new line of ink jet printers would like to include as part of their advertising the number of pages a user can expect from a print cartridge.
Based on a scatter diagram, would you estimate the linear correlation coefficient to be:
If X and Y are infinite sets with the same number of elements, show that the following conditions are equivelent for a function f: X-->Y:
Find the 99% confidence interval for the population proportion.
Should Katie conduct a between-subject ANOVA or a within-subject ANOVA? Describe your answer.
The U.S. Bureau of Prisons publishes data in Statistics Report on the times served by prisoners released from federal institutions for the first time.
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