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Suppose that x1, x2, x3, x4, and x5 is a random sample from a distribution with density function: f(x) =1/theta for 0<x<theta. The null hypothesis theta=1 is to be tested against the alternative hypothesis theta=2 so that the significance level is exactly 1/32. The null hypothesis is rejected if the maximum Xi, X5>c. What is the appropriate value of c? Answer is .9937.
A professor is targeting a score of 80 on an exam. His forty-nine students averaged 78 on an exam with s = 7. Are the scores significantly less than 80 at a significance level of 0.05? Show your work and state the conclusion.
Her students this semester can be considered a sample from the population of all students she might teach, so she compares their mean score with 72.
Determine which is the dependent variable Y and which is the independent variable X. Explain your reasoning. Draw a scatterplot and indicate the relationship if any. Explain. Compute the least-squares regression equation. Show major line items of you..
Researchers at the Brigham & Women's Hospital recruited 2,000 participants to study the relation between diet and cholesterol.
Women's heights are normally distributed with mean 63.6 and standard deviation of 2.5 in. A social organization for tall people has a requirement that women must be at least 70 in tall.
Construct a 95% confidence interval estimate for the proportion of Americans who decided what to make for dinner either at the last minute or that day.
10. 3.52 8.87 3.99 3.61 2.33 3.21 0.25 4.94use the sample data to construct a 95 confidence interval estimate of the
Assuming that the first digit cannot be a zero, compute the number of possible outcomes when the digits can be repeated.
1. The counselor calculates the unbiased estimate of the population's variance to be 15. What is the variance of the distribution of means?
Firm D has net income of $27,900, sales of $930,000, and average total assets of $465,000. Calculate the firm's margin, turnover, and ROI.
Give a mathematical expression for the probability density function of driving distance.
The scores on a scholastic achievement test were normally distributed with mean 520 and standard deviation 94. (a) If your score was 700, by how many standard deviations did it exceed the average score?
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