11) David rides his horse with a constant speed of 12 miles per hour. How long will he take to travel a distance of 6.5 miles?

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.