Aschool system employs teachers at salaries between $38,000 and $70,000. the teachers’ union and school board are negotiating the form of next years’ increase in the salary schedule. suppose that every teacher is given a 5% raise. which of the following choices correctly describes the effect this raise will have on the shape, median, and interquartile range (iqr) of the resulting distribution of salary:
a) shape – unchanged, median – divided by 0.05, iqr – divided by 0.05
b) shape – unchanged, median – increase by 105%, iqr – increase by 105%
c)shape – unchanged, median – multiplied by 1.05, iqr – multiplied by 1.05
d)shape – skewed more to the right, median – divided by 1.05, iqr – divided by 1.05
e) shape – skewed more to the right, median – multiplied by 1.05, iqr – multiplied by 1.05