How many computers? In a simple random sample of 155 households, the sample mean number of personal computers was 1.79. Assume the population standard deviation is G : 049. Part: 0 /4 Part 1 of4 (a) Construct a 98% confidence interval for the mean number of personal computers. Round the answer to at least two decimal places. A 98% confidence interval for the mean number of personal computers is l l