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Which of the following statements is a correct statement about the Central Limit​ Theorem?

After we have contructed a 90% confidence interval for the population mean, , we can say that

Given E(X)=5 , E(Y)=3, ,  and Cov(X,Y)=2, what is ?

Which statistic is most appropriate for measuring the spread of a highly skewed dataset?

The empirical rule states that for a normal distribution, approximately how much data falls within one standard deviation of the mean?

Which of the following is NOT a measure of dispersion?

If we increase the confidence level of a confidence interval, 

Suppose that you calculate the value of the sample Pearson Correlation coefficient between​ X = weekly amount of exercise and​ Y = resting heartbeat rate per minute. A value of r​ = – 1.18 would be interpreted as

A confidence interval was constructed around a population mean. The interval ranged from 65.2 to 74.8. What is the margin of error of the confidence interval?

Given E(X)=5 , E(Y)=3, ,and . Assume X and Y are independent. Calculate ?