Biologists studying the healing of skin wounds measured the rate at which new cells closed a cut made in the skin of an anesthetized newt. here are data from a random sample of 18 newts, measured in micrometers (millionths of a meter) per hour: 29, 27, 34, 40, 22, 28, 14, 35, 26, 35, 12, 30, 23, 18, 11, 22, 23, 33

(a) create a qq plot of the data. do you think it is reasonable to assume that the population distribution is normal? explain your answer. (there isn’t a unique "right" answer.)

(b) regardless of your answer to (a), assume the population distribution is normal and use that assumption to create a 90% ci for µ, the population mean rate. (use a calculator to find ¯x and s and then use the formula provided in class to prepare for exams. then check your answer with r if you wish.)

Write each fraction as an equivalent fraction with a denominator of 120then write the original fractions in order from samllest to largest

Find the area of the unshaded square

Acaterer knows he will need 60, 50, 80, 40 and 50 dinner napkins on five successive evenings. he can purchase new napkins initially at 25 cents each, after which he can have dirty napkins laundered by a fast one-day laundry service (i.e., dirty napkins given at the end of the day will be ready for use the following day) at 15 cents each, or by a slow two-day service at 8 cents each or both. the caterer wants to know how many napkins he should purchase initially and how many dirty napkins should be laundered by fast and slow service on each of the days in order to minimize his total costs. formulate the caterer’s problem as a linear program as follows (you must state any assumptions you make): a. define all variables clearly. how many are there? b. write out the constraints that must be satisfied, briefly explaining each. (do not simplify.) write out the objective function to be minimized. (do not simplify.)