For a normal distribution, the z-score boundary that separates the lowest 33% of the scores from the rest of the scores is z = -0.44. O True O False

The t-score distribution for df = 4 resembles the z-score distribution in shape more than a t-score distribution for df = 20.  a. True b. False

In the standard normal distribution, find the  z  the value that corresponds to the  82nd  percentile.

What is the SD of a distribution if the mean is 4.5 and a z score of 3.5 corresponds to a raw score of 15?

Find the 56th percentile of the standard normal distribution.

Suppose you have a distribution with a mean equal to 10, median equal to 20, and mode equal to 30. Positive skew, negative skew, or no skew?

Use a standard normal distribution table to find the percent of the total area under the standard normal curve between the following z-scores. z= - 1.3 and z = - 0.75 Click the icon to view the standard normal distribution table. The percent of the total area between z= - 1.3 and z = - 0.75 is %. (Round to the nearest integer.)

Calculate the z-score representing the bottom 10% of an approximately normal distribution. (Use a table or technology. Round your answer to two decimal places.)

For a normal distribution with a mean of 371 and 28, what is the z-score that marks off scores below 345? Round your answer to 2 decimal places.

For a normal distribution, identify the z-score location that would separate the distribution into two sections, as determined by the following percentages. (Use 2 decimal places.) 20% in the tail on the right-hand side.  30% in the tail on the left-hand side.