Question

a baby boy weighs on average 8 pounds when he is born with standard deviation of 1.67 pounds assume th weights of baby boys are normally distributed a. sketch a picture of this graph be sure to graph and label the mean and three standard deviations left and right of the meanb. based on the distribution above what percentage of boys would we expect to weigh between 4.66 pounds and 9.67 pounds c. based on the distribution above what percentage of boys would we expect to weigh more than 11.34 pounds

Answer 1

µ = 8

σ = 1.67 ==> 2σ = 3.34 ==> 3σ = 5.01

a. Graph with 1σ, 2σ and 3σ

b.

Percentage of boys would we expect to weigh between 4.66 pounds and 9.67 pounds:

81.86 %

c.

Percentage of boys would we expect to weigh more than 11.34 pounds :

2.28%