- Video What Is The Margin Of Error Video When To Use Z Test Or T Test For A Normal Distribution Assume The Populati 1 (71.67 KiB) Viewed 11 times
Video: When to Use z-test or t-test? Video: z-test example. Video: t-test example. A survey of 85 randomly selected students finds that they spend a mean of $360 per semester. Assume that the population standard deviation is $46 per month. Confidence Interval: What is the 99% confidence interval to estimate the population mean? Round your answers to two decimal places. Question Help: Video 1 Video 2 Video 3 Submit Question <ft<
Video: When to Use z-test or t-test? Video: z-test example. Video: t-test example. www.helpyourmath.com is an OER website to help students to save money on textbooks and homework systems. A survey of 25 randomly selected students finds that they save a mean of $109 per semester by using www.helpyourmath.com. Assume the date comes from a normal distribution and the sample standard deviation is $13 per month. Confidence Interval: What is the 90% confidence interval to estimate the population mean? Round your answers to two decimal places. Question Help: Video 1 Video 2 Video 3 Submit Question <ft<