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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?
Inspect table produced in question 2 above. Comment on relative sensitivity of minimum sample size to actual proportion and to desired half width.
Determine sample size requirements. When the results are available you would like your margin of error to be plus or minus 5% for the satisfaction measure and plus or minus $1.50 for the spending value.
Evaluate and interpret the coefficient of correlation and At the 0.05 level of significance, is there a significant linear relationship between calories and fat?
A supervisor has noticed that sales for all departments world wide has been averaging $12,000 a month for a number of years. For the last 18 review periods the average sales figure has dropped to $11,500 with a standard deviation of $4,000. Manage..
Find the probability that fewer than 10 of those sampled currently have access to online services.
Determine the probability of exactly one success given Poisson distribution with mean of 2.0.
The grade point average of the students at UTC is 2.80 with a standard deviation of 0.84. The grade point average of students at UTK is 2.4 with a standard deviation of 0.84. Which university shows a more dispersed grade distribution?
Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium.
Your customers have been divided into 3 groups. The first group represents 15% of customers, and these customers spent an average of $29.76 last year.
Use this information to set up a 90 percent confidence interval for the proportion, p of all US workers who play hooky.
Use empirical Rule to evaluate proportion of costs within 2 standards deviations of mean. Write down these limits.
At the .05 significance level, is there a difference in the proportion of viewers watching the three channels?
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