A random sample size of 450 is drawn from a large population. The population standard deviation is 1.6. The sample mean is 27.9. Estimate the size of the population mean, including margin of error.

The size of the population mean would be provided as:

mean +/- std/sqrt(sample size)

<=>

27.9 +/- 1.6/sqrt(450)

<=>

27.9 +/- 0.75

=> Option A is correct.

Hope this helps!

:)

"if it is my birthday, then it is snowing"

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d