Only two questions are required to be solved The solution in detail, steps, and

Only two questions are required to be solved
The solution in detail, steps, and explanation of the steps in a simple and not complicated way
The solution should be in the simplest way from the following book
Write the solution method for any unit completed in this book
Triola, M. F. (2011). Elementary statistics using the TI-83/84 Plus calculator. (3rd Edition). Pearson Education. ISBN: 978-0-321-64148-9 (print version)