What generally happens to the sampling error of the sample mean as the sample si

Question

What generally happens to the sampling error of the sample mean as the sample site is decreased? A). It gets more predictable B) It gets smaller C) It gets larger D) It gets less predictable The mean and the standard deviation of the sample population are, respectively, 125.4 and 24.1. If a sample of size n = 49 is taken, find the mean and standard deviation of the sample mean x. A) mu_x = 201.5; at alpha = 1.3 B) mu_x = 24.1; sigma_x = 3.4 C) mu_x = 3.4; sigma_x = 125.4 D) mu_x = 125.4; at sigma_x = 3.4

Explanation / Answer

Answer:

23. C

24.

Standard deviation of the sample mean = sd/sqrt(n) =24.1/sqrt(49) =3.4428571

Answer: D. µ=125.4, =3.4

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