Question

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This Question: 1 pt 13 of 24 (4 complete This Test: 24 pts possible 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 otect, so the probability of a girl is 0.5. Assume that the groups consist of 30 couples. Complete parts (a) through (c) below. a. Find the mean and the standard deviation for the numbers of girls in groups of 30 births. The value of the meanis - (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 rute of thumb to find the values separating results that are significantly low or significantly high Values of or lower are significantly low (Round to one decimal place as needed) Values of girls or greater resistant high (Round to one decimal place anded) c. is the result of 25 girtaa mut that is significantly high? What does it suggest about the effectiveness of the method? There significantly because 25 gris orts. A result of 25 girls would suggest that the method Round to one decimal place as needed) salto san greater than Enter your newer in each of the answer boxes

Answer 1

(a) Mean = 30*0.5 = 15

Standard deviation = √30*0.5*0.5 = 2.7

(b) 12.3

17.7

(c) is, greater than, 17.7, is effective