Question

If it is assumed probability (boy) = probability (girl) = 0.5

A) Estimate the probability of getting **at least**
11 girls in 20 births.

B) Estimate the probability of getting **at least**
22 girls in 40 births.

C) Estimate the probability of getting **at least**
220 girls in 400 births.

Answer #1

Assume that the probability of having a boy or a girl is 0.5.
In a family of 5 children, what is the probability that:
a) all children are boys,
b) all the children are the same gender,
c) there is at least 1 girl.

The probability of birth of a girl is 0.5. A couple wants to
have children until they have at least two girls in their
families.
What is the probability that the family will have four
children?
A. 1/16
B. 21/32
C. 7/16
D. 11/32

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...

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...

The probability of a boy being born equals .50 or 1/2 as does
the probability of a girl being born. for a randomly selected
family with two children, what's the probability of a) two boys,
that is, a boy and a girl? (Remember: before using the addition or
multiplication rule, satisfy yourself that the various events are
either mutually exclusive or independent, respectively.) b) two
girls? c) either two boys or two girls?

Ignoring twins and other multiple births, assume babies born
at a hospital are
independent events with the probability that a baby is a boy
and the probability that a
baby is a girl both equal to 0.5. Define event B = {at least
one of the next two babies is
a boy}. What is the probability of the complement of event
B?
A) 0.125
B) 0.250
C) 0.375
D) 0.500
53. Ignoring twins and other multiple births, assume babies
born...

The Wilson family had 7 children. Assuming that the probability
of a child being a girl is 0.5, find the probability that the
Wilson family had: at least 2 girls? at most 6 girls?

The Wilson family had 8 children. Assuming that the probability
of a child being a girl is 0.5, find the probability that the
Wilson family had:
at least 4 girls?
at most 5 girls?
round to 4 place decimal accuracy

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