A random sample of 225 colleges yielded a mean cost of colle…
A random sample of 225 colleges yielded a mean cost of college education of $30,500 per year. Assume the population standard deviation is $5000. Suppose you want to construct a 99% confidence interval of the mean cost of college. a. Find the standard error of the mean. Round your answer to two decimal places. [a] b. Find the lower limit of the 99% confidence interval. Round your answer to two decimal places. [b] c. Find the upper limit of the 99% confidence interval. Round your answer to two decimal places. [c]
Read DetailsAssume this confusion matrix for MODEL A used to predict whe…
Assume this confusion matrix for MODEL A used to predict whether a controlled substance is present in a sample. Which calculation will give the probability that a person has used the controlled substance given that the model predicted that they did?
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