Asurvey found that the average daily cost to rent a car in los angeles is $103.24 and in las vegas is $97.24. the data were collected from two random samples of 40 in each of the two cities and the population standard deviations are $5.98 for los angeles and $4.21 for las vegas. at the 0.05 level of significance, construct a confidence interval for the difference in the means and then decide if there is a significant difference in the rates between the two cities. let the sample from los angeles be group 1 and the sample from las vegas be group 2. confidence interval (round to 4 decimal places):