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1. According to the Centers for Disease Control and Prevention, 32% of the births in the...

1. According to the Centers for Disease Control and Prevention, 32% of the births in the US were Cesarean births. A doctor who delivered 400 babies of which 149 were Cesarean births is under suspicion for requiring more Cesarean births than is usual.

a. Calculate the expected (mean) nubmer of Cesarean births expected in 400 births.


b. Calculate the standard deviation for the number of Cesarian births expected in 400 births.


c. Is the doctor's 149 Cesarean births a significantly (unusually) high number for 400 births?

please answer all parts i will thumbs up all answers rhat answer all parts of the wuestion thank you!!'
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