For the standard normal curve, find the z-score that corresponds to the third quartile then find the z-score that corresponds to the first quartile.

find the are under the normal curve between Z-scores of - 2.06 and 1,91 -1.82 and 2.68 -0.57 and -1.42 Show and explain complete  solution

For the standard normal curve, identify the z-score that corresponds to the 67thpercentile.

What two values are needed to define any normal curve?

What does a test of normality address?

Exam scores in a large class are normally distributed with a mean of 55 and standard deviation of 10. The teacher decides to boost the scores by adding 20 points to everyone’s score.  Elizabeth’s original score on the exam was 75, so her new score is 95. The z-score corresponding to her new score (relative to the other new scores) will be:

Sunscreens are products that protect the skin from skin cancer by preventing the sun's ultraviolet (UV) radiation from penetrating the skin. According to dermatologists, the recommended amount of sunscreen needed to cover the exposed areas of the body is at least an ounce. In a study conducted specifically for a group of women aged 21 to 30 years, it was found the amount of sunscreen (X) applied by the group follows the normal distribution with mean of 0.6 ounce and standard deviation of 0.25 ounce.   The amount of sunscreen applied by women aged 21 to 30 years follows a bell-shaped distribution which is symmetric at X = _____.