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According to the data from the College Entrance Examination Board, scores on the SAT-I test have a mean of 1017, and Q1 is 880. The scores have a distribution that is approximately normal. Find the standard deviation, then use that result to find P99.
When performing a chi-square test for independence, explain how the "cell frequencies under the independence assumption" are calculated.
Find the average cost of a loaf of bread in your area and compute the cost per day for one year. (Remember that average is the mean, median, mode, and midrange, but choose the best for the data.) 1. What measures of central tendency did you use?
In optimal solution, determinethe critical path?
Some of the factors affect statistical power for a one sample t test. How does statistical power change (increase or decrease) for each of the following changes?
Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium.
The coffee/soup machine at the local bus station is supposed to fill cups with 6 ounces of soup. Ten cups of soup are brought with results of a mean of 5.93 ounces and a standard deviation of 0.13 ounces. Construct a 99% confidence interval for th..
Determine the values of mean M and standard deviation s for original sample?
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
First explain what the Gini coefficient is and what hypothetical Gini values of 0 and 1 mean. Sort the data by the Gini coefficient in 2000 and look at the list of countries.
Illustrate what decision should be made depended on the mini-max regret criterion. Decision based on the Mini-max criterion.
What is the probability that the first card dealt is an ace of spade?
By using significance level a = .05, and suppose a normal distribution what does evidence conclude?
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