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Cross- tabulation:
Test the association between esophageal cancer and alcohol consumption (using the original alcohol consumption variable) write down the hypothesis, the test used, the p-value and the interpretation. Is there a need for the Fishers exact test? Why? Test the association between esophageal cancer and alcohol consumption (using the dichotomized alcohol consumption variable) write down the hypothesis the test used the p-value and the interpretation then hand calculates a 95% CL for the odds ratio estimate on this last test.
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
Determine the probability that no female are hired. Determine the mean and standard deviation of X.
Given that the student you choose is a senior, find out the probability of selecting a non-senior?
A bank's loan officer rates applicants for credit. The ratings can be described by a Normal model with a mean of 200 and a standard deviation of 50.
We are establishing a quality control program for a process and need to establish the mean and standard deviation for the process. The first 10 batches had samples of size 5 taken.
95% of breaking strengths will be contained between what two values symmetrically distributed around mean?
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
Using Analysis of Variance (ANOVA) test at 5% level if there are important differences in mean sales calls made across the three branches.
The Minitab output for the Tukey Least Significant Difference multiple comparisons is below. Which means are different and similar
A sample of 50 provided a sample mean of 14.15. The population standard deviation is 3.
The chi-square goodness of fit is______________a one-tailed test with the rejection region in the right tail.
What sample size and acceptable level would result in a probability of .05 that a good batch will be rejected and a probability of .10 that a bad batch will be accepted?
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