A random sample of 7 patients are selected from a group of 25
and their cholesterol levels were recorded as follows:
128, 127, 153, 144, 132, 120, 115
Find the sample mean.
a. |
142.87 |
|
b. |
135.16 |
|
c. |
131.29 |
|
d. |
130.32 |
|
e. |
143.26 |