Determining Whether Gender-Selection Technique Is Effective Assume that in a test of a gender-selection technique, a clinical trial results in 9 girls in 14 births. Refer to Table 4-1 and find the indicated probabilities.

a. Find the probability of exactly 9 girls in 14 births.

b. Find the probability of 9 or more girls in 14 births.

c. Which probability is relevant for determining whether 9 girls in 14 births is unusually high: the result from part

(a) or part (b)?

d. Does 9 girls in 14 births suggest that the gender-selection technique is effective?

Why or why not?