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Several years​ ago, 47​% of parents who had children in grades​ K-12 were satisfied with the...

Several years​ ago, 47​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive. A recent poll asked 1 comma 045 parents who have children in grades​ K-12 if they were satisfied with the quality of education the students receive. Of the 1 comma 045 ​surveyed, 494 indicated that they were satisfied. Construct a 95​% confidence interval to assess whether this represents evidence that​ parents' attitudes toward the quality of education have changed.

What are the null and alternative hypothesis?

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