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For a normal distribution, which of the following statistics is a good measure for the middle of the data?

Which of the following statements is true about the central limit theorem?

The central limit theorem states that the distribution of sample proportions is approximately equal when the sample size is at least 30.

How do you define the term power?

Which of the following statements correctly interprets a 95% confidence interval (15.02, 15.04) for the population mean, if the sample mean is 15.03?

Which two parameters determine the scale and location of a normal distribution?

Which of the following is a valid method for checking the normality of your data?

Suppose you have data that is normally distributed with a mean of 0 and a standard deviation of 1. You would expect approximately 95% of the data values to fall between which two numbers?

-.5 and .5

0 and 2

-1 and 1

-2 and 2

Suppose a bank manager is concerned that the percent of loans processed that contain errors has increased above the acceptable amount of 1%. A significance test is conducted to test his concern, and a p-value of .037 is reported at α=0.05 significance level. Which of the following sets of statements is true?