1) Determine the point estimate of the population mean and margin of error for the confidence interval.

Lower bound is 19,

upper bound is 31.

Part 1

The point estimate of the population mean is _________

Part 2

The margin of error for the confidence interval is ____

2) Several years ago, 43% 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 165 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1 comma 165 surveyed, 482 indicated that they were satisfied. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. Question content area bottom Part 1 What are the null and alternative hypotheses? Upper H 0: p greater than less than equals not equals enter your response here versus Upper H 1: p not equals equals less than greater than enter your response here (Type integers or decimals rounded to two decimal places as needed.) Part 2 Use technology to find the 99% confidence interval. We are 99% confident the proportion of parents who had children in grades K-12 that were satisfied with the quality of education the students receive is between enter your response here and enter your response here. (Type integers or decimals rounded to two decimal places as needed.) Part 3 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 contains 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 does not contain the proportion stated in the null hypothesis, there is insufficient 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 sufficient evidence that parents' attitudes toward the quality of education ha

3) Construct a confidence interval of the population proportion at the given level of confidence.

x=540,

n=1200,

98% confidence

Click here to view the standard normal distribution table (page 1).

Click here to view the standard normal distribution table (page 2).

Question content area bottom

Part 1

The lower bound of the confidence interval is _______

(Round to three decimal places as needed.)

Part 2

The upper bound of the confidence interval is ________

(Round to three decimal places as needed.)