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Discuss the reason that sampling distribution of the mean follow a normal distribution for a large enough sample size, even though the population may not be normally distributed? Please discuss in detail. Discuss how a sample size, n, an increase in confidence is achieved by widening the confidence interval. With regard to hypothesis testing about two means, what is the distinction between two independent populations and two related populations? Please be specific in your answer. In a one-way ANOVA, what is the difference between among-group variation and between-group variation? Discuss the assumptions of ANOVA? Please list and elaborate on each answer. Explain the null hypothesis (Ho) for a simple linear regression equation? Please list and explain in detail.
The consequences of the central limit theorem is that if we end up averaging the measurements of a particular quantity, the distribution of an average tends on going toward a normal one?
State the decision rule using the .01 significance level. Compute the value of chi-square. What is your decision regarding H0?
Strongly support, support, no opinion, do not support, strongly do not support. The number of people in each category was recorded.
A researcher plans a study in which a crucial step is offering participants a food reward. It is important that the three food rewards be equal in appeal.
Estimate a multiple regression model using revenue as your dependent variable. For independent variables, include population, average income, screens, theatre age, and dummy variables for mall and strip mall.
You read a report that says, "On the basis of the simple random sample of 100 high school seniors that took the SATM test this year, a confidence interval for µ is found to be 512.00 ± 25.76." What was the confidence level used to calculate this..
Perform all pairwise comparisons among the three programs, using a Tukey adjustment and an overall significance level of 0.05, then interpret all your results.
Describe a research problem that would benefit from Factor Analysis. What are the variables and what would you hope to achieve?
Use differential to approximate square root of 16.3
There is one Grand Prize of $500, one First Prize of $100, and 8 Second Prizes of $50. Find the expected winnings per ticket sold.
Using the data file below, construct a histogram and a frequency polygon. Describe the shape of this distribution.
At 0.05 level of significance, is there evidence that proportion of claims processed under this new system is higher than article reported for previous system?
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