Question

Jacob was researching the number of hours the average adult sleeps each night. He collected data from five individuals:

Answer 1

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