A student recorded the waiting time for an appointment. Here is the sample data set (in...
A student recorded the waiting time for an appointment. Here is the sample data set (in hours):
1.5 0.6 0.9 1.8 1.9 0.5 1.1 4.4 0.5 0.8
(d) What is the percentage falling within 1 standard deviation? Does it satisfy the Empirical Rule?
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Homework Answers
Here
sample mean 
sample standard deviation 
mean - 1*standard deviation = 1.4 - 1.173 = 0.227
mean + 1*standard deviation = 1.4 +1.173 = 2.573
Number of observations falling within 1 standard deviation, i.e. in the interval(0.227, 2.573) is = 9
The percentage falling within 1 standard deviation
According to empirical rule, 68% values fall within 1 standard deviation.
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