Giving a test to a group of students, the grades and gender are summarized below A B C Total
Male 4 11 15 30
Female 16 10 18 44
Total 20 21 33 74
If one student is chosen at random,
1. Find the probability that the student was female:
2. Find the probability that the student was female AND got a "A":
3. Find the probability that the student was female OR got an "A":
4. If one student is chosen at random, find the probability that the student was female GIVEN they got a 'A':

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.