Suppose that the teachers in the previous exercise each receive a 5% raise. the amount of the raise will vary from $1500 to $3000, depending on present salary. Will a 5% across-the-board raise increase the spread of the distribution as measured by the distance between the quartiles? Do you think it will increase the standard deviation?Previous Question:A school system employs teachers at salaries between $30,000 and $60,000, The teachers’ union and the school board are negotiating the form of next year’s increase in the salary schedule. Suppose that every teacher is given a flat $1000 raise.