Records maintained by the office of budget in a particular state indicate that the amount of time elapsed between the submission of travel vouchers and the final reimbursement of funds has approximately a normal mean of 39 days and a population standard deviation of 12 days. A sample of 16 vouchers was pulled at random.
- What is the standard error of the sampling distribution?
- What is the probability that the sample mean will be less than 31 days for reimbursement?
- What is the probability that the sample mean will indicate between 35 and 45 days for reimbursement?
- What is the probability that the sample mean will indicate more than 46 days for reimbursement?