\fpurse Messages Forums Calendar Gradebook Log Out ome > MAT150.5 - Summer II > Assessment Assignment #8.1 & #8.2 Score: 1/5 1/5 answered Question 2 Video: How to Find T-Value from a T-Table? @ t-table.pdf = [+] What is the t value with a 99% confidence interval for the true population mean if the sample size n = 20? (Please keep three decimal places) t value = Submit Question OMCourse Messages Forums Calendar Gradebook |Log Out Home > MAT150.5 - Summer II > Assessment Assignment #8.1 & #8.2 Score: 1/5 1/5 answered Question 4 Video: When to Use z-test or t-test? _ Video: z-test example. Video: t-test example. A survey of 89 randomly selected students finds that they spend a mean of $432 per semester. Assume that the population standard deviation is $47 per month. Confidence Interval: What is the 9% confidence interval to estimate the population mean? Round your answers to two decimal places. MATiSO - Summer 1| > Assessment Assignment #8.1 & #8.2 Score: 115 115 answered 'i 0 Question 3 v 3;- Video: What is the Margin of Error? E3\" Video: When to Use z-test or t-test? [5' For a normal distribution, assume the 'populatlon' standard deviation is 13.8. What is the maximal margin of error associated w' h ' ' ' ' decimal places) It a 90% confidence interval for the true population mean if n = 28. (Round to two a: Question Help: E] Video Submit Question me > MAT150.5 - Summer II > Assessment ssignment #8.3 score: 0/1 0/1 answered Question 1 In a recent survey of 1079 students, 956 of them would like to recommend www.helpyourmath.com to their friends. Construct a 9% confidence interval to estimate the proportion of all students who would recommend www.helpyourmath.com to their friends. Give your answers to three decimals: ( Submit Question OMDO esc C B 5 7 tab V Q g h shift V b115 115 answered WT;_ -_ g Video: When to Use z-test or t-test? 3 Video: z-test example. 3' Video: t-test example. G\" vmw.helpyourmath.com is an OER website to help students to save money on textbooks and homework systems. Asurvey of 23 randomly selected students finds that they save a mean of $197 per semester by using www.helpyourmath.com. Assume the date comes from a normal distribution and the sample standard deviation is $19 per month. Confidence Interval: What is the 99% confidence interval to estimate the population mean? Round your answers to two decimal places. :l't