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Using the confidence intervals: 95%
Determine which groups differ in average shelf life.
A B C D
94 88 76 82
100 89 69 80
90 88 76 82
97 83 79 78
101 79 80 89
90 82 72 80
Give test statistic, hypothesis, decision rule and hypothesis
Suppose that a quarter is randomly selected, what is the probability that this quarter has high productivity growth and has a large pay increase?
In a study of 10 graduate students from a nurse education program, the average age of the group was 48.6 years and the standard deviation was 4.1 years. Assume the variable is normally distributed. Find the 95% confidence interval of the true mean..
A product is made up of two subsystems in parallel. Subsystem one consists of ten elements in series each with a failure rate of 1/100. The second subsystem consists of 5 elements in series each with a failure rate of 1/200. What is the overall re..
Construct a 99% confidence interval for the population mean tread wear for this type of tire.
How could the Central Limit Theorem apply in making a business decision? Try to provide an example from your current or future career.
The diameters of oranges in the certain orchard are normally distributed with the mean of 5.26 inches and a standard deviation of 0.50 inches.
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
An assembly line turns out 10% deffectives. Determine an acceptance number and sampling plan for samples of size 14 and a producers risk of 3%. (AQL = 10)).
Examine the residual files and produce appropriate residual plots to examine the assumptions. Are the Level-1 residuals normally distributed? Are the level-2 residuals multivariate normal? How do you know?
What are the advantages of ANOVA over the mean test and what are the disadvantages? Where would I use this in my everyday life?
Heights of men on a baseball team has a bell-shape distribution with a means of 173 cm and a standard deviation of 9 cm. Using the empirical, rule what is the approximate percentage of the men between the following values?
Design a contingency table that will hold your data. What are your degrees of freedom and critical value at a 0.05 confidence level? You do not need data to answer this.
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