A researcher wants to investigate if there is a difference in the rates of hotel room in two cities. A sample of 50 were selected from each city, the average hotel room in the first city is RM88.42 and in the second city is RM80.61 and the standard deviation are RM5.62 and RM4. The 95% confidence interval of the difference between the means showed that the lower confidence limit is .........

5.76

5.80

5.78

5.70