Question

Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. This method is designed to increase the likelihood that each baby will be a girl, but assume that the method has no effect, so the probability of a girl is 0.5. Assume that the groups consist of 48 couples.Complete parts (a) through (c) below.

a. Find the mean and the standard deviation for the numbers of girls in groups of 48 births. The value of the mean is__ (Type an integer or a decimal. Do not round.) The value of the standard deviation is __. (Round to one decimal place as needed.)

b. Use the range rule of thumb to find the values separating results that are significantly low or significantly high. Values of ___ girls or fewer are significantly low. (Round to one decimal place as needed.) Values of ___ girls or greater are significantly high. (Round to one decimal place as needed.)

c. Is the result of 42 girls a result that is significantly high? What does it suggest about the effectiveness of the method? The result is/is not significantly high, because 42 girls is greater than/equal to/less than ___ girls. A result of 42 girls would suggest that the method is not effective/is effective.(Round to one decimal place as needed.)

Answer #1

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Assume that different groups of couples use a particular method
of gender selection and each couple gives birth to one baby. This
method is designed to increase the likelihood that each baby will
be a girl, but assume that the method has no effect, so the
probability of a girl is
0.50.5.
Assume that the groups consist of
2929
couples. Complete parts (a) through (c) below.
a. Find the mean and the standard deviation for the numbers of
girls in...

Assume that different groups of couples use a particular method
of gender selection and each couple gives birth to one baby. This
method is designed to increase the likelihood that each baby will
be a girl, but assume that the method has no effect, so the
probability of a girl is 0.5. Assume that the groups consist of 34
couples. Complete parts (a) through (c) below. a. Find the mean
and the standard deviation for the numbers of girls in...

A gender-selection technique is designed to increase the
likelihood that a baby will be a girl. In the results of the
gender-selection technique, 933 births consisted of 470 baby girls
and 463 baby boys. In analyzing these results, assume that boys
and girls are equally likely. a. Find the probability of getting
exactly 470 girls in 933 births. b. Find the probability of getting
470 or more girls in 933 births. If boys and girls are equally
likely, is 470...

The accompanying data table describes results from groups of 10
births from 10 different sets of parents. The random variable x
represents the number of girls among 10 children. Complete the
questions below.
x P(x)
0 0.002
1 0.016
2 0.037
3 0.114
4 0.201
5 0.238
6 0.198
7 0.113
8 0.045
9 0.014
10 0.022
The maximum usual value is (Round to one decimal place as
needed.)
The minimum usual value is (Round to one decimal place as...

A gender-selection technique is designed to increase the
likelihood that a baby will be a girl. In the results of the
gender-selection technique,
813 births consisted of 414 baby girls and 399 baby boys. In
analyzing these results, assume that boys and girls are equally
likely.
a. Find the probability of getting exactly 414 girls in 813
births.
b. Find the probability of getting 414 or more girls in 813
births. If boys and girls are equally likely, is 414...

A gender-selection technique is designed to increase the
likelihood that a baby will be a girl. In the results of the
gender-selection technique, 845 births consisted of 432 baby girls
and 413 baby boys. In analyzing these results, assume that boys
and girls are equally likely.
a. Find the probability of getting exactly 432 girls in 845
births.
b. Find the probability of getting 432 or more girls in 845
births. If boys and girls are equally likely, is 432...

A gender-selection technique is designed to increase the
likelihood that a baby will be a girl. In the results of
thegender-selection technique,837 births consisted of 438 baby
girls and 399 baby boys. In analyzing these results, assume that
boys and girls are equally likely.
a. Find the probability of getting exactly 438 girls in 837
births.
b. Find the probability of getting 438 or more girls in 837
births. If boys and girls are equally likely, is 438 girls in...

Please provide answers for the questions a, b, c and d.
Thank You :)
A gender-selection technique is designed to increase the
likelihood that a baby will be a girl. In the results of the
gender-selection technique, 809 births consisted of 421 baby girls
and 388 baby boys. In analyzing these results, assume that boys
and girls are equally likely.
a. Find the probability of getting exactly 421 girls in 809
births.
b. Find the probability of getting 421 or...

A clinical trial tests a method designed to increase the
probability of conceiving a girl. In the study 480 babies were
born,
and 264 of them were girls. Use the sample data to construct a 99%
confidence interval estimate of the percentage of girls
born. Based on the result, does the method appear to be
effective?
< p < (Round to three decimal places as needed.)
Does the method appear to be effective?
Yes, the proportion of girls is significantly...

A clinical trial tests a method designed to increase the
probability of conceiving a girl. In the study 480 babies were
born,
and 264 of them were girls. Use the sample data to construct a 99%
confidence interval estimate of the percentage of girls
born. Based on the result, does the method appear to be
effective?
< p < (Round to three decimal places as needed.)
Does the method appear to be effective?
Yes, the proportion of girls is significantly...

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