Find the number of standard deviations from the mean. Round your answer to two decimal places.
-The number of assists per match for the setter on your school's volleyball team has a mean of 55 and a standard deviation of 7. How many standard deviations from the mean is an outing with 70 assists?
A) 2.14 standard deviations above the mean
B) 1.07 standard deviations above the mean
C) 2.14 standard deviations below the mean
D) 1.07 standard deviations below the mean

Question

Quizplus · Accepted Answer

To find the number of standard deviations from the mean, we use the formula: z = (x - μ) / σ, where x is the given value, μ is the mean, and σ is the standard deviation. Plugging in the values given, we get: z = (70 - 55) / 7 = 2.14. Since the value is above the mean, the answer is 2.14 standard deviations above the mean. Therefore, the best choice is A.

Find the Number of Standard Deviations from the Mean