A Set Of Mathematics Exam Scores Has A Mean Of 70 And A Standard Deviation Of 8

When your score is lower than the mean you want to be as close to the mean as possible to be within the 70 of the population in one standard deviation.

A set of mathematics exam scores has a mean of 70 and a standard deviation of 8. 2 standard deviations below the mean. The way to solve this is to compute z scores for each test and see which is higher. For each of the following scores indicate whether the tail is to the right or left of the score and find the proportion of the distribution located in the tail. Adam scored 70 on his final exam.

You are five points below the mean. The teacher standardized the exam distribution to a new mean of µ 70 and standard deviation of σ 5. 02 28 2019 mathematics middle school scores on a test have a mean of 70 and a standard deviation of 11. How many standard deviations is adam s score from the mean.

In this case your score is 65 and the mean is 70. Therefore you want the sd to be large enough to include your score. If these scores are standardized so that the new distribution has μ 50 and σ 10 what new value would be obtained for a score of x 59 from the original distribution. The scores on a mathematics exam have a mean of 69 and a standard deviation of 6.

Where x is the score mu is the mean sigma is the standard deviation. 1 5 standard deviation below the mean c. A set of score has a mean of μ 63 and a standard deviation of σ 8. Trina s score on the exam was 79 giving her a z score of 1 50.

Zmath 78 70 8 1 which means they scored 1 standard deviation above average on math. Z 50 b. Scores on a test have a mean of 70 and a standard deviation of 11. Convert michelle s score to z score.

2 standard deviations above the mean d. His class s average score was 50 with a standard deviation of 10. If a population with m 60 and sigma 8 is transformed into z scores then the resulting distribution of z scores will have a mean of and a standard deviation of. Convert michell get the answers you need now.

Math last week sarah had exams in math and in spanish. X 66 d. What is trina s z score for the standardized distribution of the calculus exam. Michelle has a score of 48.

X 72 b. A normal distribution has a mean of μ 70 and a standard deviation of σ 8. 1 standard deviation above the mean b. Find the x value that corresponds to the z score 1 28.