SOLUTION: The incubation time for chicks is normally distributed with mean 21 days and standard deviation approximately 1 day. If 1000 eggs are being incubated, how many chicks do we expect

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Question 1202162: The incubation time for chicks is normally distributed with mean 21 days and standard deviation approximately 1 day. If 1000 eggs are being incubated, how many chicks do we expect will hatch?
a) in 19 to 23 days?
b) in 22 days or more?
c) in 21 days or fewer?
d) in 18 to 21 days?
e) in 19 days or fewer
f) in 19 to 24 days?
g) in 18 to 24 days?
h) in 18 days or more?


Found 2 solutions by Theo, ikleyn:
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
mean = 21 days
standfard deviation = 1 day

total of 1000 eggs are being incubated.

how many checks are expected to hatch in:

a) in 19 to 23 days?
.954 * 1000 = 954

b) in 22 days or more?
.159 * 1000 = 159

c) in 21 days or fewer?
.5 * 1000 = 500

d) in 18 to 21 days?
.499 * 1000 = 499

e) in 19 days or fewer
.023 * 1000 = 23

f) in 19 to 24 days?
.976 * 1000 = 976

g) in 18 to 24 days?
.997 * 1000 = 997

h) in 18 days or more?
.999 * 1000 = 999



Answer by ikleyn(52802) About Me  (Show Source):
You can put this solution on YOUR website!
.


        Tutor @Theo in his post provided the answers, but did not provide the method.


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Find the answers in the post by @Theo to this problem.