Question

**Chapter 7.2 Question 14**

**The mean incubation time of fertilized eggs is 23 days.
Suppose the incubation times are approximately normally distributed
with a standard deviation of 1 day.**

**A.) Determine the 17th percentile for incubation
times.**

**B.) Determine the incubation times that make up the
middle 95%**

Answer #1

The mean incubation time of fertilized eggs is 23 days. Suppose
the incubation times are approximately normally distributed with a
standard deviation of 1 day. (a) Determine the 11th percentile for
incubation times. (b) Determine the incubation times that make up
the middle 39%. （2 numbers）

The mean incubation time of fertilized eggs is 20 days. Suppose
the incubation times are approximately normally distributed with a
standard deviation of 1 day. (a) Determine the 14th percentile for
incubation times. (b) Determine the incubation times that make up
the middle 95% of fertilized eggs.

The mean incubation time of fertilized eggs is 19 days. Suppose
the incubation times are approximately normally distributed with a
standard deviation of 1 day.
(a) Determine the 10th percentile for incubation times.
(b) Determine the incubation times that make up the middle 95%
of fertilized eggs.

The mean incubation time of fertilized eggs is 21days. Suppose
the incubation times are approximately normally distributed with a
standard deviation of 11day.
(b) Determine the incubation times that make up the middle
97%.

The mean incubation time for a type of fertilized egg kept at
100.3?°F is 22 days. Suppose that the incubation times are
approximately normally distributed with a standard deviation of 1
day.
?(a) What is the probability that a randomly selected fertilized
egg hatches in less than 21 days?
?(b) What is the probability that a randomly selected fertilized
egg hatches between 20 and 22 days?
?(c) What is the probability that a randomly selected fertilized
egg takes over 23...

The mean incubation time for a type of fertilized egg kept at
100.8°F is 21 days. Suppose that the incubation times are
approximately normally distributed with a standard deviation of 2
days. (a) What is the probability that a randomly selected
fertilized egg hatches in less than 19 days? (b) What is the
probability that a randomly selected fertilized egg hatches between
17 and 21 days? (c) What is the probability that a randomly
selected fertilized egg takes over 23...

The mean incubation time for a type of fertilized egg kept at
100.6F is 19 days. Suppose that the incubation times are
approximately normally distributed with a standard deviation of 2
days.
(a) What is the probability that a randomly selected fertilized
egg hatches in less than 17 days?
(b) What is the probability that a randomly selected fertilized
egg takes over 21 days to hatch?
(c) What is the probability that a randomly selected fertilized
egg hatches between 15...

The mean incubation time for a type of fertilized egg kept at
100.6?°F is 21 days. Suppose that the incubation times are
approximately normally distributed with a standard deviation of 2
days. ?(a) What is the probability that a randomly selected
fertilized egg hatches in less than 17 ?days? ?(b) What is the
probability that a randomly selected fertilized egg hatches between
19 and 21 ?days? ?(c) What is the probability that a randomly
selected fertilized egg takes over 25...

The mean incubation time for a type of fertilized egg kept at a
certain temperature is
1818
days. Suppose that the incubation times are approximately
normally distributed with a standard deviation of
11
dayday.
Complete parts (a) through (e) below.
(a) Draw a normal model that describes egg incubation times of
these fertilized eggs.
Choose the correct graph below.
Click here to view graph d.
LOADING...
Click here to view graph c.
LOADING...
Click here to view graph b.
LOADING......

The incubation time for a breed of chicks is normally
distributed with a mean of 20 days and standard deviation of
approximately 2 days. Look at the figure below and answer the
following questions. If 1000 eggs are being incubated, how many
chicks do we expect will hatch in the following time periods?
(Note: In this problem, let us agree to think of a single day or a
succession of days as a continuous interval of time. Assume all
eggs...

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