1. The total number of packages shipped over five days is normally distributed.
2. The difference between the numbers of packages shipped on any two consecutive days is normally distributed.
3. The difference between the number of packages \shipped today and the number shipped tomorrow is zero.
4. If each shipped package earns the carrier +10, then the amount earned per day is not normally distributed.
5. The probability that more packages are handled tomorrow than today is 1>2.
6. To verify the use of a normal model, the shipper should use the normal quantile plot of the amounts shipped on a series of days.
The number of packages handled by a freight carrier daily is normally distributed. On average, 8,000 packages are shipped each day, with standard deviation 600. Assume the package counts are independent from one day to the next.