Question 5 of 7 (1 point) Attempt 1 of Unlimited View question in a popup 8.1 Section Exercise 44 How many computers? In a simple random sample of 170 households, the sample mean number of personal computers was 2 09. Assume the population standard deviation is a = 0.65. Part: 0 / 4 Part 1 of 4 (a) Construct an 80% confidence interval for the mean number of personal computers. Round the answer to at least two decimal places. An 80% confidence interval for the mean number of personal computers is