A study of commuting times reports the travel times to work of a random sample of 20 employed adults in New York State. The mean
is x⎯⎯⎯ = 31.25 minutes and the sample standard deviation is s = 23.7 minutes. What is the standard error of the mean?
1 answer:
Answer:
The standard error of the mean = 5.14 mins
Step-by-step explanation:
Number of random sample (n) = 20
Mean(X) = 31.25 mins
Standard deviation (α) = 23.7 mins
Standard error of mean =
standard deviation / √sample size
= 23.7/√20
= 23.7/4.4721
= 5.14 mins
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