Question

1. A study looked at the birth weights of 541 babies born in the United States. The mean weight was 3234 grams with a standard deviation of 871 grams. Assume that birth weight data are approximately bell-shaped. Estimate the number of newborns who weighed between 1492 grams and 4976 grams. Write only a number as your answer. Round your answer to the nearest whole number.

2. For a population of people who completed their GED, the average age at completion was 30.2 and the standard deviation was 4.2. The distributions of ages was approximately bell-shaped. Compute the z-score for an individual who completed their GED at the age of 25 .

Write only a number as your answer. Round your answer to two decimal places (for example: 3.15).

Answer 1