The length of time required by students to complete a 1-hourexam is a random variable with a density function given by f(y) = cy2 + y, 0 = y = 1 0, elsewhere
A. Find c.
B. Find F(y)
C. Graph f(y) and F(y)
D. Use F(y) in (b) to find F(-1), F(0), and F(1)
E. Find the probability that a randomly selected studentwill finish in less than half an hour.
F. Given that a particular student needs at least 15 minutesto complete the exam, find the probability that she will require atleast 30 minutes to finish.

ok

step-by-step explanation:

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies

inch

step-by-step explanation:

yard and mile are too big.