Question: According to USA Today (April 20, 1998 Snapshot), a poll of 8709 adults taken in 1976 found that 9% believed in reincarnation, while a poll of 1000 adults taken in 1997 found that 25% held that belief.
a. Assuming that a proper random sample was used, verify that the sample proportion for the 1976 poll represents the population proportion to within about 1%.
b. Based on these results, would you conclude that the proportion of all adults who believe in reincarnation was higher in 1997 than it was in 1976? Explain.