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Use the Empirical Rule to answer the following questions about test scores.

a. The mean is ______.

b. The standard deviation is ______.

c. ______% of the test scores are between 58 and 66.

d. ______% of the test scores are between 54 and 70.

e. ______% of the test scores are between 50 and 74.

f. ______% of the test scores are between 62 and 66.

g. ______% of the test scores are less than 62.

h. ______% of the test scores are less than 66.

Answer :

Number of data = 6

Then

a. Mean = (50+54+58+06+62+ 70)/6

. =

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