Ask a New Question

Question

If boys and girls are equally likely and groups 400 births are randomly selected find the standard deviation
11 years ago

Answers

MathGuru
Standard deviation = √npq = √[(400)(.5)(.5)] = √(100) = 10

Note: n = sample size, p = .5, q = .5

11 years ago
JOANNIE
could you please break this answer down, I'm not sure how you got .5. please
7 years ago

Related Questions

Five boys and seven girls in a history class will go on a field trip during the Easter vacation. The... There are 19 boys and 19 girls in the school pep band. If Trey randomly selects a member of the pep... There are 9 boys and 12 girls at a party,everyone is wearing a pair of shoes.How many shoes are ther... If boys ad girls are equally likely to be born, what is the probability that in a randomly selected... If boys and girls are equally likely to be born, what is the probability that in a randomly selected... 4 girls shared a pizza equally for lunch. If one of them gave away 1/3 of her share, what fraction... Should boys help girls in the kitchen ?yes or No speak for or against the motion. There were 12 boys and 20 girls in a chorus. What is the ratio of boys to girls? Response...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use