the mean number of hours spent per day on the computer, according to a national survey, is six hours, with a standard deviation of 2.5 hours. if each time was increased by 1.5 hours, what would be the new mean and standard deviation? (2 points)

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]