If 20 women are randomly chosen from the study, what is the probability that exactly 2 will have a low birth-weight delivery (defined as < 2500 g)?

Obstetrics

A study was performed of different predictors of low birth-weight deliveries among 32,520 women in the Nurses€™ Health Study [9].

The data in Table 5.5 were presented concerning the distribution of birth-weight in the study:

Table 5.5: Distribution of birthweight in the Nurses€™ Health Study

 

Transcribed Image Text:

Birthweight (g) Category < 2500 A 1850 5.7 2500-2999 6289 19.3 41.6 3000-3499 13,537 3500-3999 8572 26.4 4000+ 2272 7.0 Total 32,520 100.0