Average of the means
If a population has a standard deviation of 18, what is the minimum number of samples that need to be averaged in order to be 95% confident that the average of the means is within 2 of the true mean?
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What is the definition of the odds ratio?
For a normal distribution with a zero mean and standard deviation of one : Use 10 random variables samples to compute the average and variance Repeat 100 times, use the 100 calculated averages to compute the mean and variance on the 100 calculated
A survery found that womens heights are normally distributed with mean of 62.1 and standard deviation of 2.3 in. The survery also found that men's heights are normally distributed with a mean of 68.5 and standard deviation of 2.9. Most of the live
A hockey team has 6 forwards, 4 defensemen, and 2 goalies. At any time, 3 forwards, 2 defensemen, and 1 goalie can be on the ice. How many combinations of players can a coach put on the ice?
Construct a 90% confidence interval for the mean difference to describe the size of the improvement.
If the linear correlation between two variables is negative, what can be said about the slope of the regression line?
What critical value t* should be used to calculate the margin of error for a confidence interval
The professor teaching a large introductory class gives a final exam that has alternate forms, A, B, and C. A student taking the exam using Form B is upset because she claims that Form B is much harder than Forms A and C. Discuss how percentile po
Suppose that you invest the entire $200,000 in one stock. Find the probability that the prot will be more than $16,000.
Find the solution of the system of linear equations below using the Gauss-Jordan elimination method. Enter your answer for each variable in the appropriate box for that variable. Use integers or fractions, no decimals.
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