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(please make answer clear) Big Babies: A public health organization reports that 19% of baby boys...

(please make answer clear)

Big Babies: A public health organization reports that 19% of baby boys 6 - 8 months old in the United States weigh more than 20 pounds. A sample of 15 babies is studied.

(a) What is the mean number who weigh more than 20 pounds in a sample of 15 babies aged 6 - 8 months? Round the answer to two decimal places. The mean number who weigh more than 20 pounds is __??

b) What is the standard deviation of the number who weigh more than 20 pounds in a sample of 15 babies aged 6 - 8 months? Round the answer to four decimal places. The standard deviation of the number who weigh more than 20 pounds is__??

Math   Statistics-And-Probability   
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