Maria and ralph are peeling apples. the time it takes maria to peel an apple is approximately normally distributed with mean 12 seconds and standard deviation 2 seconds. the time it takes ralph to peel an apple is approximately normally distributed with mean 11 seconds and standard deviation 2.5 seconds. 1. find the probability that (starting together) maria finishes her next apple before ralph. 2. if the first person done always waits for the second person to finish (so that they always start together), ralph will finish first ‪ percent of the time.

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Find the solutions for a triangle with a =16, c =12, and b = 63º

The liabilities of cullumber are $99,000. owner’s capital is $143,000; drawings are $96,000; revenues, $467,000; and expenses, $301,000. what is the amount of cullumber company’s total assists?