In a controlled laboratory environment, independent random s…
In a controlled laboratory environment, independent random samples of 10 adults and 10 children were tested by a psychologist to determine the room temperature that each person finds most comfortable. The study provided the following results: Adults Children Sample size 10 10 Sample mean (in degrees) 77.5 74.5 Sample variance 4.5 2.5 Which one of the following is the correct 99% confidence interval for the true difference in population mean temperatures that adults and children find most comfortable?