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, 856 births consisted of 438 baby girls and 418 baby boys. In analyzing these results, assume that boys and girls are equally likely. a. Find the probability of getting exactly 438 girls in 856 births. b. Find the probability of getting 438 or more girls in 856 births. If boys and girls are equally likely, is 438 girls in 856 births unusually high? c. Which probability is relevant for trying to determine whether the technique is effective: the result from part (a) or the result from part (b)? d. Based on the results, does it appear that the gender-selection technique is effective? a. The probability of getting exactly 438 girls in 856 births is. (Round to four decimal places as needed.)

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, 856 births consisted of 438 baby girls and 418 baby boys. In analyzing these results, assume that boys and girls are equally likely. a. Find the probability of getting exactly 438 girls in 856 births. b. Find the probability of getting 438 or more girls in 856 births. If boys and girls are equally likely, is 438 girls in 856 births unusually high? c. Which probability is relevant for trying to determine whether the technique is effective: the result from part (a) or the result from part (b)? d. Based on the results, does it appear that the gender-selection technique is effective? a. The probability of getting exactly 438 girls in 856 births is. (Round to four decimal places as needed.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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