7. Develop a program that allows the user to convert between the metric measurements of millimeter, centimeter, meter, kilometers; and inches, feet, yards, and miles. The program should be written so that any one measurement can be converted to the other. 8. Develop a function that accepts a list of reals numbers (floats) and then calculate and returns the 95% z-based confidence interval. The function must return a list consisting of two elements only, i.e. the lower and upper limits of the confidence interval.