The result of 146 chemical reactions gave yields with a standard deviation of 4.864 mol.
What is the standard error of the mean?
Select one:
a. SE = 0.403 mol
b. SE = 0.015 mol
c. SE = 0.033 mol
d. SE = 0.162 mol
e. SE = 23.658 mol
f. SE = 4.864 mol

a. SE = 0.403 mol

Step-by-step explanation:

The standard error of the mean, is the standard deviation of means of means.

It is calculated using,

We have the standard deviation to be

and the sample size is n=146.

We substitute the values to get:

We approximate to three decimal places to get:

tip $2.90

total $17.40

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