(has to be made up) No examples from a book or online source.. Can someone answer all parts to a, b and c please a) provide an example of a scenario for a single-sample z-test that includes the population mean, population standard deviation, sample size, and sample mean. Do not only present the numbers but also provide a reasonable example of something that could be tested with a single sample z test b) explain why your example is appropriate for a single sample z test c) calculate both the 99% confidence interval and effect size for your example, showing your work for each