This data is from the Framingham Study. In 1950, study participants were divided into two groups by cholesterol levels; the high cholesterol group and the low cholesterol group. In 1950 1120 people were in the low cholesterol group' of those, 20 had suffered a previous heart attack. Over the next 8 years (until the end of 1958), 66 more (new) heart attacks occurred in this low cholesterol group. In 1950 among those in the high cholesterol group (n=1127) there were 27 that had suffered a previous heart attack. Over the next 8 years, (until the end of 1958), 135 new heart attacks occurred among members of this group. remember rate as "per 100,000".

1.What was the incidence rate of heart attacks in the low cholesterol group from 1951 until the end of 1958?

2.What was the incidence rate of heart attacks in the high cholesterol group from 1951 until the end of 1958?