Answer:
0.5466
Step-by-step explanation:
Given that the length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean 266 days and standard deviation 16 days.
Let X be the length of pregnancies
X is N(266,16)
To find out the probability that pregnancies last between 240 and 270 days (roughly between 8 months and 9 months)
P(240<x<270)
convert each into Z score as
x=240 means Z = -1.625
x=270 means z=0.25
Required prob
=
Answer:
The time required to finish the work by both candy and Tim working together = 36.83 minute
Step-by-step explanation:
Time taken by the candy to finish the work = 85 min
Time taken by the Tim to finish the work = 65 min
Thus the time taken by both to finish the work =
Put the values of and
we get ,
=
=
= 36.83 minute
Thus the time required to finish the work by both candy and Tim working together = 36.83 minute