Changing jobs: A sociologist sampled 228 people who work in computer-related jobs, and found that 51 of them have changed jobs in the past 6 months. Part: 0 / 2 Part 1 of 2 (a) Construct a 99.5% confidence interval for those who work in computer-related jobs who have changed jobs in the past 6 months. Round the answer to at least three decimal places. A 99.5% confidence interval for the proportion of those who work in computer-related jobs who have changed jobs in the past 6 months is 0.301 < p < 0.146 5 Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage from a sample of lenders in Macon, Georgia for one day. It is reasonable to assume that the population is approximately normal. 4.754 4.373 4.174 4.678 4.426 4.229 4.124 4.250 3.952 4.195 4.296 Send data to Excel Part: 0 / 2 Part 1 of 2 (a) Construct an 80% confidence interval for the mean rate. Round the answer to at least four decimal places. An 80% confidence interval for the mean rate is 4.196 Internet service: An Internet service provider sampled 540 customers and found that 74 of them experienced an interruption in high-speed service during the previous month. Part 1 of 3 (a) Find a point estimate for the population of all customers who experienced an interruption. Round the answer to at least three decimal places. The point estimate for the population proportion of all customers who experienced an interruption is 0.137 Part: 1/3 Part 2 of 3 (b) Construct an 80% confidence interval for the proportion of all customers who experienced an interruption. Round the answer to at least three decimal places. An 80% confidence interval for the proportion of all customers who experienced an interruption is Smart phone: Among 240 cell phone owners aged 18-24 surveyed, 108 said their phone was an Android phone. Perform the following. Part 1 of 3 (a) Find a point estimate for the proportion of cell phone owners aged 18-24 who have an Android phone. Round the answer to at least three decimal places. The point estimate for the proportion of cell phone owners aged 18-24 who have an Android phone is 0.450 Part: 1/3 Part 2 of 3 (b) Construct a 90% confidence interval for the proportion of cell phone owners aged 18-24 who have an Android phone. Round the answer to at least three decimal places. A 90% confidence interval for the proportion of cell phone owners aged 18-24 who have an Android phone is