Question

Let x stand for the length of an individual screw. 100 screws were sampled at a time. The population mean is 2.5 inches and the population standard deviation is 0.2 inches. What is the mean of the sampling distribution of sample means?
a) 0.2
b) 2.5
c) 0.02
d) 2.

Answer 1

Answer:

The  correct option is   b

Step-by-step explanation:

From the question we are told that

   The  sample size is  $n = 100$

    The  population  mean is  $\mu = 2.5$

   The  sample  standard deviation is  $\sigma = 0.2$

Generally the mean of the sampling distribution of sample means is mathematically represented as

       $\mu_{\= x } = \mu$

=>    $\mu_{\= x } = 2.5$