question 1: several years ago..? question 2: a simple random sample...?

Several years ago, 33% of parents who had children in grades K-12 were satisfied with the quality of education the students receive A recent poll asked 1,205 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1 205 surveyed, 461 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 hypotheses? Hop v versus H4 P (Type integers or decimals rounded to two decimal places as needed.) Use technology to find the 95% confidence interval We are 95% 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 and (Type integers or decimals rounded to two decimal places as needed.) What is the correct conclusion? O 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. O B. 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 have changed O 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. O 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. A simple random sample of size n = 48 is obtained from a population with u = 66 and o = 15. (a) What must be true regarding the distribution of the population in order to use the normal model to compute probabilities involving the sample mean? Assuming that this condition is true, describe the sampling distribution of x. (b) Assuming the normal model can be used, determine P(x