The test scores in a certain statistics class are normally distributed with a mean of 76 and a standard deviation of 5. a.) Use the Empirical Rule to estimate the percentage of students who scored between 66 and 86 points. b.) Compute the z-score for a test score of 79 points. a. 0.97 b. 0.6 C. -0.6 d. -0.97 c.) What proportion of the scores were below 79 points? a. 0.7257 b. 0.834 c. 0.2743 d. 0.166
The test scores in a certain statistics class are normally distributed with a mean of 76 and a standard deviation of 5. a.) Use the Empirical Rule to estimate the percentage of students who scored between 66 and 86 points. b.) Compute the z-score for a test score of 79 points. a. 0.97 b. 0.6 C. -0.6 d. -0.97 c.) What proportion of the scores were below 79 points? a. 0.7257 b. 0.834 c. 0.2743 d. 0.166
MATLAB: An Introduction with Applications
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
Transcribed Image Text:The test scores in a certain statistics class are normally distributed with a mean of 76 and a standard deviation of 5.
a.) Use the Empirical Rule to estimate the percentage of students who scored between 66 and 86 points.
b.) Compute the z-score for a test score of 79 points.
a. 0.97
b. 0.6
C. -0.6
d. -0.97
c.) What proportion of the scores were below 79 points?
a. 0.7257
b. 0.834
c. 0.2743
d. 0.166
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