in the united states, birth weights of newborn babies are approximately normally distributed with a mean of…

in the united states, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g. according to the empirical rule, 68% of all newborn babies in the united states weigh between and.

in the united states, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g. according to the empirical rule, 68% of all newborn babies in the united states weigh between and.

Answer

Explanation:

Step1: Recall empirical - rule for normal distribution

The empirical rule states that for a normal distribution, about 68% of the data lies within 1 standard - deviation of the mean.

Step2: Calculate the lower bound

The lower bound is $\mu-\sigma$. Given $\mu = 3500$ g and $\sigma = 500$ g, so the lower bound is $3500 - 500=3000$ g.

Step3: Calculate the upper bound

The upper bound is $\mu+\sigma$. Given $\mu = 3500$ g and $\sigma = 500$ g, so the upper bound is $3500 + 500 = 4000$ g.

Answer:

3000 g, 4000 g