q23 Suppose 40% of banks have all tellers behind windows inside the bank. Five banks are selected. What is the chance that at most 1 of them have all tellers behind windows?

.3370

.6630

.4148

None of the other choices is correct

q24 Take all possible samples of size n from a population. Find the sample mean (x-bar) from each sample. Put all these sample means together. What is the result?

None of the other choices is correct

The population distribution of X-bar

The sampling distribution of X-bar

The probability distribution of X-bar