Question

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The mean and standard deviation of a population being sampled are 64 and 6, respectively. If the sample size is 50, what is the standard error of the mean?

how do I find the standard error?

Answer 1

The standard error of the sample mean is:
\[\frac{\sigma}{\sqrt{n}}=\frac{6}{\sqrt{50}}\]

Answer 2

so the answer is .85?

Answer 3

Correct.

Answer 4

Thank you! would you be able to help me with my next one? @kropot72

Answer 5

Please post it :)

Answer 6

In a random sample of 85 people attending a workshop, 63 of the respondents said the workshop was useful. What is the sample proportion of the people who said the workshop was useful?

would the answer be .13?

Answer 7

The sample proportion is:
\[\frac{63}{85}=you\ can\ calculate\]

Answer 8

Thank you! I got it:)

Answer 9

Good work :)