The distribution of actual weights of 8 oz. wedges of cheddar cheese produced at a dairy is normal with mean 8.1 ounces and standard deviation 0.2 ounces. a sample of 10 of these cheese wedges is selected. what is the standard deviation of the sampling distribution of the mean
a. approximately normal, mean 8.1, standard deviation 0.2.
b. approximately normal, mean 8.1, standard deviation 0.020.
c. it is not possible to tell because the sample size is too small.
d. approximately normal, mean 8.1, standard deviation 0.063.