Outhside Hospital in Bay Shore, New York, used to perform a stress test to study the heart muscle after a person has a heart attack. This hospital wants to reduce service time, which is the time it takes from the test being carried
out until the test results come out. Usually, the average service time is 68 hours. After making changes to the test
implementation process, a sample of 50 stress tests was selected. In this sample, the average service time is 32
hours, with a standard deviation of 9 hours. Make an interval estimate with a 95% confidence level (α=5%) for
the population mean of service time.

What is the communication process? why isnt it possible to communicate without using all the elements in the communication process?

While studying for the engineering economy final exam, you and two friends find yourselves craving a fresh pizza. you can't spare the time to pick up the pizza and must have it delivered. "pick-up-sticks" offers a 1-1/4-inch-thick (including toppings), 20-inch square pizza with your choice of two toppings for $15 plus 5% sales tax and a $1.50 delivery charge (no sales tax on delivery charge). "fred's" offers the round, deep-dish sasquatch, which is 20 inches in diameter. it is 1-3/4 inches thick, includes two toppings, and costs $17.25 plus 5% sales tax and free delivery. 1. what is the problem in this situation? state it in an explicit and precise manner. 2. systematically apply the seven principles of engineering economy (pp. 3-6) to the problem you have defined in part (a). 3. assuming that your common unit of measure is dollars (i.e., cost), what is the better value for getting a pizza based on the criterion of minimizing cost per unit of volume? 4. what other criteria might be used to select which pizza to purchase?

Agovernment receives a gift of cash and investments with a fair value of $200,000. the donor specified that the earnings from the gift must be used to beautify city-owned parks and the principal must be re-invested. the $200,000 gift should be accounted for in which of the following funds? a) general fund b) private-purpose trust fund c) agency fund d) permanent fund