Let x stand for the percentage of an individual student's math test score

Math Aug 04, 2020

Let x stand for the percentage of an individual student's math test score. 64 students were sampled at a time. The population mean is 78 percent and the population standard deviation is 14 percent.

What is the standard deviation of the sampling distribution of sample means?

Expert Solution

we know that for calculation of standard deviation of the sampling distribution of sample means

we use central limit thoerem;

μ_X= mean = 78%

μ_X= μ_X^-

σ_X = standard deviation = 14% = 0.14

n = 64

σ^-_x= σ_x / √n

=0.14 / √64

= 0.14 / 8

=0.0175

Archived Solution

Unlocked Solution

You have full access to this solution. To save a copy with all formatting and attachments, use the button below.

Already a member? Sign In

Important Note: This solution is from our archive and has been purchased by others. Submitting it as-is may trigger plagiarism detection. Use it for reference only.

For ready-to-submit work, please order a fresh solution below.

Or get 100% fresh solution

Get Custom Quote