A survey of 830 American millennials determined that 22% of them were married. Estimate the true proportion of married American millennials with a 99% confidence level. a. Determine the point estimate b. Determine the critical value for the 99% confidence interval c. Determine the 99% confidence interval.

A report indicates that the mean price for a gallon of milk in July 2014 was $3.65 in MooTown. It is believed that the average price of milk has changed. A sample of 10 gallons of milk were recently bought from randomly selected stores. The sample had an average of $3.714 with a standard deviation of $0.087. Determine if there is enough evidence to determine if the mean price of milk has changed. Assume the data is normally distributed. a. What are the null and alternative hypothesis? b. What is the test statistic? c. Complete the test using the critical value. Determine the critical value at the 0.01 significance level. Determine the decision rule (work for determining the statistical decision) Determine the decision Determine the conclusion