The test scores of 1,200 students are normally distributed with a mean of 83 and a standard deviation of 5.5. Under which interval did approximately 978 students score?

Select one:

a. 72

b. 77.5

c. 83

d. 72

The test scores of 1,200 students are normally distributed with a mean of 83 and a standard deviation of 5.5. Under which interval did approximately 978 students score?

Select one:

a. 72

b. 77.5

c. 83

d. 72

Empirical Rule, it is found that the interval in which approximately978 studentsscored was:A.72 < x < 88.5.## What does the Empirical Rule state?

normally distributedrandom variable:68%of the measures arewithin 1standard deviation of the mean.95%of the measures arewithin 2standard deviations of the mean.99.7%of the measures arewithin 3standard deviations of the mean.percentagethat 978 is of 1200 is:symmetryof the normal distribution, two outcomesare possible involving 81.5% of the measures:between 77.5 and 94.between 72 and 88.5,which isoption Ain this problem.Empirical Ruleat https://brainly.com/question/24537145