Answer:
47.5
Explanation:
The mean is 3.4 f and the standard deviation is 0.5 kg.
Then, if we want the percentage of babies born between 3.4 kg and 4.4 kg, we want the percentage between the mean and two standard deviations from the mean because
mean + 2(standard deviation) = 3.4 kg + 2(0.5 kg)
mean + 2(standard deviation) = 4.4 kg
By the empirical rule, the percentage between two standard deviations of the mean is 95%, so the percentage between the mean and two standard deviations from the mean is
95%/2 = 47.5%
Therefore, the answer is
47.5%
