Confidence Interval Critical Values Confidence Interval Critical Values Level of Confidence Critical Value, Z/2 0.90 or 90% 1.645 0.95 or 95% 1.96 0.98 or 98% 2.33 0.99 or 99% 2.575Several years ago, 52% of parents with children in grades K-12 were satisfied with the quality of education the students receive. A recent poll found that 496 of 1,045 parents with children in grades K-12 were satisfied with the quality of education the students receive. Construct a 90% confider interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. Click the icon to view the Confidence Interval Critical Value table. What are the null and alternative hypotheses? Ho- p versus H1 : p (Type integers or decimals. Do not round.) Find the 90% confidence interval. The lower bound is The upper bound is (Round to three decimal places as needed.) What is the correct conclusion? A. Since the interval does not contain the proportion stated in the null hypothesis, there is sufficient evidence that parents' attitudes toward the quality of education have changed. B. Since the interval does not contain the proportion stated in the null hypothesis, there is insufficient evidence that parents' attitudes toward the quality of education have changed. C. Since the interval contains the proportion stated in the null hypothesis, there is sufficient evidence that parents' attitudes toward the quality of education have changed D. Since the interval contains the proportion stated in the null hypothesis, there is insufficient evidence that parents' attitudes toward the quality of education have changed