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1 way anova help. Question is should students listen to music, watch television, or go to library for their studies. 30 students were randomly selected to participate and randomly placed in the 3 groups evenly. Their GPA's were then used to measure performance. I need to determine:
what independent and dependent variables are?
what are study hypotheses?
Is data significant? Why?
What groups differ and what is 95% Confidence interval?
What is results interpretation?
3.55
What is the value of the test statistic and the chi-square table, the most accurate statement that can be made about the p-value
4. A simple random sample of 300 items is selected from a large shipment, and testing reveals that 4% of the sampled items are defective. The supplier claims that no more than 2% of the items in the shipment are defective. Carry out an approp..
Describe a study you might design that could use the Chi Square statistic. What are the variables? What are the null and alternative hypotheses? Why would the Chi Square test be appropriate for this design? What would the Chi Square statistic indicat..
A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will be between 85 and 125 points?
Decision Trees are graphic displays of the decision process. When do you feel it is appropriate to use decision trees?
An urn contains white and pink balls. Six balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all balls drawn from the urn are white? ..
In a sample of n = 15 selected from an underlying normal distribution, we obtain standard deviation s =10. Test the null hypothesis that the population standard deviation σ = 16.
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 compare his tobt with this tcv. Is he more likely to make a Type I or a Type II err..
The regression equation Salary = 25,000 + 3200 YearsExperience + 1400 YearsCollege describes employee salaries at Axolotl Corporation. The standard error is 2600. John has 10 years' experience and 4 years of college. His salary is $60,500. What..
Polychlorinated biphenyl (PCB) is among a group of organic pollutants found in a variety of products, such as coolants, insulating materials, and lubricants in electrical equipment. Disposal of items containing less than 50 parts per million (ppm) PC..
Wall Street securities firms paid out record year-end bonuses of $125,000 per employee. Suppose we take a sample at Goldman Sachs to see whether the year-end bonus is different from the population mean in Wall Street companies
Using the SPSS 2 × 3 ANOVA data file for Module 4 (located in Topic Materials), answer the following questions. NOTE: Helpful hints are provided here for you to use while answering these questions. There is no separate answer sheet/guide to use while..
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