Transcript text: I can determine when a data set warrants a normal distribution. I can determine the mean and standard deviation of a data set and fit it to a normal distribution. I can estimate population percentages based on mean, standard deviation, and distribution. I can estimate the areas under the normal curve using calculators, spreadsheets, and tables.
The histogram gives data about a random sample of 15 babies born at a hospital and measures their length in inches. The mean is 20 and the standard deviation is 1.5. Use this information to answer questions $3-6$.
3. What is the shape of the data distribution shown by the histogram? (Lesson 22.2) $(1 / 2$ point)
A. Normal
B. Skewed left
C. Skewed right
4. The interval of babies' length within 1 standard deviation of the mean is $18.5