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 50 couples. Complete parts (a) through (c) below. a. Find the mean and the standard deviation for the numbers of girls in groups of 50 births. The value of the mean is μ = (Type an integer or a decimal. Do not round.) The value of the standard deviation is o= (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 (Round to one decimal place as needed.) c. Is the result of 48 girls a result that is significantly high? What does it suggest about the effectiveness of the method? The result (1). suggest that the method (3) (Round to one decimal place as needed.) (2) (1) O is girls or greater are significantly high. O is not significantly high, because 48 girls is (2). equal to greater than O less than is not effective. is effective. girls. A result of 48 girls would
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 50 couples. Complete parts (a) through (c) below. a. Find the mean and the standard deviation for the numbers of girls in groups of 50 births. The value of the mean is μ = (Type an integer or a decimal. Do not round.) The value of the standard deviation is o= (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 (Round to one decimal place as needed.) c. Is the result of 48 girls a result that is significantly high? What does it suggest about the effectiveness of the method? The result (1). suggest that the method (3) (Round to one decimal place as needed.) (2) (1) O is girls or greater are significantly high. O is not significantly high, because 48 girls is (2). equal to greater than O less than is not effective. is effective. girls. A result of 48 girls would
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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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 0.5 . Assume that the groups consist of 50 couples. Complete parts (a) through (c) below.
Transcribed Image Text: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 50 couples. Complete parts (a) through (c) below.
a. Find the mean and the standard deviation for the numbers of girls in groups of 50 births.
The value of the mean is μ =
(Type an integer or a decimal. Do not round.)
The value of the standard deviation is o=
(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
(Round to one decimal place as needed.)
c. Is the result of 48 girls a result that is significantly high? What does it suggest about the effectiveness of the method?
girls or greater are significantly high.
The result (1).
suggest that the method (3)
(Round to one decimal place as needed.)
(2)
(1) O is
O is not
significantly high, because 48 girls is (2)
equal to
greater than
O less than
is not effective.
is effective.
girls. A result of 48 girls would
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