A random survey of 250 employees shows that 86 of them would be interested in using a new company dental plan that was proposed. Find the 85% confidence interval for the population proportion of employees who would be interested in the new dental plan. O 1-PropZInt: (0.301, 0.387) O ZInterval: (241.9, 258.1) O TInterval: (242.15, 257.85) O 1-PropZint: (0.306, 0.383) QUESTION 4 You are starting an Internet Service Provider (ISP) and need to estimate the average internet usage of households in one week for your business plan and model. How many households should you randomly select to be 94% confident your estimate is within a margin of error of 15 minutes? Assume we know the population standard deviation is o = 56 minutes. O 1.88 O 1.88 x 56 2 15 O 1.88 12 .94( 1 - .94) 15 O 1 88 12 .25 15