Centers for Disease Control and Prevention (CDC) defines a healthy sleep duration to be at least seven urs per day. The CDC reports that the percentage of people who report a healthy sleep duration varies by arital status. The CDC also reports that in 2018,67% of those who are married report a healthy sleep uration; 62% of those who have never been married report a healthy sleep duration; and 56% of those who re divorced, widowed, or separated report a healthy sleep duration. The file SleepHabits contains sample data on the sleeping habits of people who have never been married that are consistent with the CDC's findings. Use these data to answer the following questions. Click on the datafile logo to reference the data. DATA a. Develop a point estimate and a 95% confidence interval for the proportion of those who have never been married who report a healthy sleep duration. Point estimate (to 4 decimals) Confidence interval to (to 4 decimals) b. Develop a point estimate and a 95% confidence interval for the mean number of hours of sleep for those who have never been married. Point estimate (to 4 decimals) Confidence interval to (to 4 decimals) c. For those who have never been married, estimate the number of hours of sleep per day for those who report a healthy sleep duration (to 4 decimals). Check My Work (1 remaining)