A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is known that the standard deviation of the population is 22 mph. The standard error of the mean is
a. 22.00
b. 96.60
c. 4.24
d. 2.00
D
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Fill in the blank(s) with correct word
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a. True b. False Indicate whether the statement is true or false
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a. True b. False Indicate whether the statement is true or false