Find the probability, expressed to the nearest percent, that a variable has a z-score less than 0.42.

A normally distributed population of scores has a mean of 78 and a standard deviation of 3.5. Convert a score of 72 to an equivalent z-score.

Find the area between the mean and a z-score of 1.45.

Find the percent of data falling below a z-score
of -0.28.

A normally distributed set of test scores has a standard deviation of 8. Find the z-score of a test score of 65 if the mean of the data set of test scores is 42.

Standardized test scores are normally distributed.
The data set of test scores has μ = 240 and
σ = 25.
a)Find the z-score corresponding to the test score of 350. 
Choose:

4.40

4.42

4.44

4.46

b) If a z-score has the value of 3.4, find its corresponding test score.
Choose:

155

210

265

325

Find the area between a z-score of -1.25 and a z-score of +2.33.

The temperature is recorded in 65 cities on a given day in California. The average temperature is 74 degrees Fahrenheit with a standard deviation of 4 degrees. What is the z-score for a temperature of 71 degrees?

Find the area above a z-score of 0.57.

The femur bone in the African antelope has a mean length of 1.5 feet with a standard deviation of 2 inches. Find the z-score that corresponds to a length of 21 inches.