(d.)..n.. 27 Enter an exact number. Viewing Saved Work Revert to Last Response 6. DETAILS MY NOTES ASK YOUR TEACHER A population mean Is 13. The sample mean Is 12.8, and the sample standard deviation Is two. The sample size is 20. What distribution should you use to perform a hypothesis test? Assume the underlying population Is normal. O normal distribution O binomial distribution O exponential distribution O geometric distribution O Student's t-distribution 7 DETAILS MY NOTES ASK YOUR TEACHER A programmer claims that the average amount of time needed to create a simple website is 1 hour. You ask a random sample of 10 programmers and find that they tend to disagree. They think that a simple website can be created In less than an hour