For a particular population, a sample of n = 9 scores has a standard error of 8.  For the same population, a sample of n = 16 scores would have a standard error of ____.

A population of n = 4 scores has a standard error of 10 points.  For the same population, what is the standard error for a sample of n = 16 scores?

What is the probability of randomly selecting a student with a test score less than 85 knowing that µ=80 and σ=15?

What is the probability of randomly selecting a student with a test score greater than 90 knowing that µ=80 and σ=15?

If random samples, each with n = 9 scores, are selected from a normal population with µ = 80 and σ = 36, then what is the expected value for the Mean of the distribution of sample means?

A normal distribution has a mean of µ = 40 with σ = 10.   What proportion of the scores in this distribution are greater than X = 55?

A coin has been flipped 20 times in a row and landed on heads each time. Kirby bets all his savings that this time it must land on tails. What is the probability of the coin landing on tails?

Which of the following statements about power is false?

Even if a treatment has an effect, it is still possible to obtain a sample mean that is very similar to the original population mean.  What outcome is likely if this happens?

The critical boundaries for a hypothesis test are z = +1.96 and 1.96. If the z-score for the sample data is z = 1.90, then what is the correct statistical decision?