Looking for help on this questions.

Suppose that we will take a random sample of size n from a population having mean / and standard deviation o. For each of the following situations, find the mean, variance, and standard deviation of the sampling distribution of the sample mean x : (a) = 18, 0= 2, n= 22 (Round your answers of "o : " and "o ; 2" to 4 decimal places.) OX 2 OX (b) H = 494, 0= .3, n= 125 (Round your answers of "g : " and "g ; 2" to 4 decimal places.) UX OX 2 OX(c) H = 2, 0= .4, n= 9 (Round your answers of "o : " and " ; - 2" to 4 decimal places.) UX ox 2 OX (d) # = 144, 0= 8, n= 1,159 (Round your answers of "o : " and "o ; 2" to 4 decimal places.) UX ox 2 OX