(30) write a multithreaded program (using posix pthreads) that calculates various statistical values for a list of numbers. this program will be passed a series of numbers on the command line and will then create five separate worker threads. one thread will determine the average of the numbers, the second will determine the maximum value, the third will determine the minimum value, the fourth thread will determine the median value, and the fifth thread will determine the standard deviation. for example, suppose your program is passed the integers 90 81 78 95 79 72 85 the program will report the average value is 82.86 the minimum value is 72.00 the maximum value is 95.00 the median value is 81.00 the standard deviation is 7.77 the variables representing the average, minimum, maximum, median, and standard deviation values will be stored globally. the worker threads will set these values, and the parent thread will output the values once the workers have exited. comment your code and submit it in a file named numstats.cpp