When testing a method of gender selection prior to childbirth, we assume that the rate of female births is 50 , and we reject that assumption if we get results that are unusual in the sense that they are very unlikely to occur with a normal 50 birth rate In a preliminary test of the XSORT method of gender selection during in vitro fertilization, 15 births resulted in 14 girls a Assuming a 50 rate of female births, find the probability that in 15 births, the number of girls is 14 b Assuming a 50 rate of female births, find the probability that in 15 births, the number of girls is 15 c Assuming a 50 rate of female births, find the probability that in 15 births, the number of girls is 13 or fewer d Assuming a 50 rate of female births, find the expected number (i e mean) of girls in 15 births e Assuming a 50 rate of female births, find the standard deviation of the number of girls in 15 births f Using the range rule of thumb, find the minimum usual value and maximum usual value for the number of girls in 15 births g Do these preliminary results suggest that the XSORT method is effective in increasing the likelihood of a baby being a girl Why or why not

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Question: When testing a method of gender selection prior to childbirth, we assume that the rate of female births is 50%, and we reject that assumption

When testing a method of gender selection prior to childbirth, we assume that the rate of female births is 50%, and we reject that assumption if we get results that are unusual in the sense that they are very unlikely to occur with a normal 50% birth rate. In a preliminary test of the XSORT method of gender selection during in-vitro fertilization, 15 births resulted in 14 girls.

a. Assuming a 50% rate of female births, find the probability that in 15 births, the number of girls is 14.

b. Assuming a 50% rate of female births, find the probability that in 15 births, the number of girls is 15.

c. Assuming a 50% rate of female births, find the probability that in 15 births, the number of girls is 13 or fewer.

d.Assuming a 50% rate of female births, find the expected number (i.e. mean) of girls in 15 births.

e. Assuming a 50% rate of female births, find the standard deviation of the number of girls in 15 births.

f. Using the range rule of thumb, find the minimum usual value and maximum usual value for the number of girls in 15 births.

g. Do these preliminary results suggest that the XSORT method is effective in increasing the likelihood of a baby being a girl? Why or why not?

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