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Would you be able to baby step walk me through the formulas needed to solve this problem? ie; step 1, step 2, etc. Maybe you could use a similar problem to this one so I can at least understand the process I need to do to get this answer? This book I have does not simplify and step through the method for solving this in a way that I can understand. I have other similar questions, and if I understand this one I might be able to do the rest.
SAT Scores and the Central Limit Theorem. Assume that SAT scores are normally distributed with a mean of 500 and a standard deviation of 100. Suppose that many samples of size n are taken from a large population of students and the mean SAT score is computer for each sample. Find the mean and standard deviation of the resulting distribution of sample means for n = 100 and for n = 400. Briefly explain why the standard deviation is different for the two values of n.
Following are the data collected. Should the head of the Bureau be concerned about the time taken at lunch by employees? Why?
Country A and Country C spends about the same amount on average per person per year. Which has the greater spread?
Create the estimated regression equation by calculating the values of b 0 and b 1
Using the .05 level of significance: a) Is there a difference among types of gasoline? b) Is there a difference in the cars?
Assume that the significance level is a= 0.1. Use the given information to find the p-value and the critical value (s). With H1: p = with line through it 1/2 the test statistic is z= - 1.35
What can we say about the form or way of the distribution of the average or median of the sample?
In your environment (business or personal), please give an application of exponential smoothing and why you would use this technique.
Discuss the strengths and weaknesses of correlational and regression studies; discuss concepts such as positive and negative correlations, correlation coefficients, confounding, and causality.
Form the cumulative percentage distribution and plan a cumulative percentage polygon.
Can you envision circumstances under which these outcomes would not be normally distributed? Provide three distinct examples of the business outcomes that are not normally distributed.
British scientists have developed a 15 minute brain scan they hope could be used to detect autism in children. Autism and related disorders affect up to 7 out of every 1000 individuals.
What is the probability of a type 1 error in this situation? What does it mean?
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