Tom scores an X = 43 on an exam with a mean of µ = 52. Tom’s score is associated with a z-score of -1.80. What is the value for the exam standard deviation?

What is the value of SS (sum of squared deviations) for the following population? Population: 1, 1, 1, 5

A population is normally distributed with µ = 90 and

If an entire population with µ = 60 and

A sample of n = 64 scores is selected from a population with µ = 80 and with

A researcher needs to compare two treatment conditions with a sample size of n = 30 in each treatment. If a repeated-measures design is used, the study will require n = 60 participants.

What is the probability of randomly selecting a z-score greater than z = -0.75 from a normal distribution?

A normal distribution has a mean of µ = 40 with

A sample is selected from a normal population with a mean of µ = 40. If the sample mean is M = 45, which of the following combinations would make the sample mean an extreme, unrepresentative value for the population?

A vertical line drawn through a normal distribution at z = +2.11 separates the distribution into two sections, the body and the tail. What proportion of the distribution is in the tail?