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In 2011 a sruvey by the American Bar Association indicated that the average yearly income of attorneys was $110,000. A sample of 81 attorneys was taken in 2012 and it reflected an average yearly income of $120,000. Assume the standard deviation of the population of attorneys in 2012 is $36,000.
We want to test to determine if there has been a significant increase in the average yearly income of attorneys. Provide the null and the alternative hypotheses.
Compute the test statistic.
Determine the p-value; and at 95% confidence, test the hypotheses.
In the study of fingerprints, an important quantitative characteristic is the total ridge count for the 10 fingers of the individual.
A 1990 census report revealed that the mean distance that U. S. citizens live from their birthplace is 50 miles and that the standard deviation is 15 miles. A random sample of 49 residents of your city yielded a mean distance of 56 miles.
Use the Empirical Rule to estimate the proportion of costs within two standard deviations of the mean. What are these limits?
Preform post hoc comparisons if necessary and what conclusions can be drawn from the F-ratio and the post hoc comparisons?
Find the margin of error for the 95% confidence interval used to estimate the population proportion.
Develop a regression model to identify the fixed overhead costs to the consulting group and what is the constant component of the consultant group's overhead?
What's the probability that among three randomly selected high school students
select a company maybe your employer and assess how it uses data in marketing its products or services. if it is not
The article can be on Descriptive Statistics, Probability and the Normal Distribution, Sampling and Sampling Distributions, Regression Analysis, or Time Series Forecasting.
Create a survey questionnaire that will help you gather data relevant to the problem that interests you. the survey questionnaire must be presented to the lecturer for comments and approval before administering to the target repondents. (minimum 10 q..
Describe the data for a correlational research study. Explain how correlational research is different from other research evaluating the relationship between two variables.
of 20 rats in a cage 12 are males and 9 are infected with a virus that causes hemorrhagic fever. of the 12 male rats 7
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