Look again at the normal distribution in Figure 5.

a. Estimate the percentage of births occurring between 0 and 60 days after the due date.

b. Estimate the percentage of births occurring between 14 days before and 14 days after the due date.

Transcribed Image Text:

This region has about 18% of the total area under the curve... ... so the relative frequency is 0.18 for births more than 14 days before the due date. The total area under the entire curve equals 1, or 100%. 1 This region has about 12% of the total area under the curve.... ... so the relative frequency is 0.12 for births more than 18 days after the due date. Figure 5 -60 -30 -14 0 18 30 Days before or after due date