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1. Explain what happens is a negative relationship between two variables.
2. Explain what happens in positive relationship between two variables
3. In terms of measures of association, how is Lambda different from the other measures used for nominal level data?
4. How are measures of association that are ordinal level different from those that are nominal level?
5. According to the lecture notes, how many measures of association are appropriate for ordinal level data? What ones are used?
6. When would you choose not to conduct a measure of association?
Assume that each shipment contains a random sample of bearings. a. What is the probability that a given shipment is acceptable?
Using the 0.01 significance level, can we conclude that there is a positive correlation between the variables?
You want to know whether the population means are different in the two populations. Conduct an hypothesis test using an alpha of .05 and the critical value method.
The reason why we finish our calculation by dividing range by 4 is that in most data sets 95% of the data values fall within two standard deviations of the mean.
Some researchers have conjectured that stem-pitting disease in peach tree seedlings might be controlled with weed and soil treatment. An experiment was conducted to compare peach tree seedling growth with soil and weeds treated with one of two her..
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error??
Make for more scatter plots comparing GDP growth 1970-2000 to corruption, political rights, rule of law, and socio-political instability
Utilizing a binominal experiment, that is each trail can be reduced to two outcomes, construct a binomial distribution.
Data on distribution of cost for building effort, design work and testing effort.
Henry performed a two-tailed test for an experiment in which N = 24. He could not find his table of t critical values, but he remembered the tcv at df = 13. He decided to complete his obt.with this tcv. Is he more likely to make a type I or II err..
Tree diagram for a probability experiment - Identify the sample space of the probability experiment and determine the number of outcomes in the event. Show a tree diagram if it is appropriate.
Which of the following would be most helpful in assessing the practical significance of a test of hypotheses about a proportion?
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