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1) How does difference estimation differ from estimation of the mean?
2) When would you want to estimate the population total instead of the population mean?
3) Under what circumatances do you use a one-sided confidence interval instead of a 2 sided confidence interval?
Here is a two-way table showing enrollment data for full-time undergraduate students in U.S. colleges and universities. The entries are thousands of students:
What is a discrete random variable and how does it differ from a continuous random variable? Give examples.
Find the probability that fewer than 10 of those sampled currently have access to online services.
Use a decision tree to describe the possible strategies and the consequences (or payoffs) of each. Show your decision tree.
She is interested in testing the null hypothesis that the mean SAT score is the same for each type of schooling using the one-way ANOVA. Some summary statistics for the three groups are given below, followed by the one-way ANOVA table.
What is the real world value of the y-intercept and slope in a regression equation? Other than statistics problems, why should I care?
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
Compute the minimum sample size required assuming that no prior information is avaiable?
The standard deviation of the population of adult female height scores is 3 inches. A random sample of 50 women yields a mean height of 64 inches. Calculate the standard error of the mean.
What is the OR of getting cancer fora late child birth woman compared to an early first birth woman?
How can you answer the dual simplex question with maximization objective function and also explain difference between m tecnique and two phase method?
Using the EMV criteria (you wish to maximize expected profits in this case) determine what course of action that Optel should take. Make sure to state the best strategy in words.
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