Answer:
0.41
Step-by-step explanation:
Given the data:
Subject Hours of Sleep
Subject 1 6
Subject 2 6.5
Subject 3 6
Subject 4 7.5
Subject 5 5
The standard error of the sample mean :(S. E) is given by standard deviation / square root of sample size.
To calculate the standard deviation :
Using the formula :
Sample size = n = 5
Sqrt(Σ(X - mean)^2 / n - 1)
This can be obtained faster using a calculator :
Hence, using calculator the standard deviation of the sample is 0.90829
Hence,
Standard Error = 0.90829 / sqrt(5)
Standard Error = 0.90829 / 2.2360679
Standard Error = 0.4061996
