Construct a 90%90% confidence interval to estimate the true difference between the proportions of children who read at an early age when they are read to frequently compared to those who were read to less often,
Early-childhood-development studies indicate that the more often a child is read to from birth, the earlier the child begins to read. A local parents’ group wants to test this theory and samples families with young children. They find the following results. Construct a 90%90% confidence
| Read to at Least Three Times per Week | Read to Fewer than Three Times per Week | |
|---|---|---|
| Started Reading by age 44 | 31 | 45 |
| Started Reading after age 44 | 47 | 47 |
Lower endpoint=
upper endpoint
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