Free points, not a lot but just take them

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

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.