Question 1 Let :E be the average of sample data from a population. Select all of the following that 3'3 is also known as. C] a? is a point estimate C] a? is a condence level C] a? is a margin of error E] a? is a statistic Question 2 Error Bound and Margin of Error mean the same thing? 0 True 0 False Question 3 2 pts If % = 0.05 for a condence interval for a mean when a is known, then which one of the follow is true? 0 2% = 1.645, and CL = 90% O 2% = 1.960 , and CL = 95% O 2% = 1.960 , and CL = 90% O z; = 1.645 , and CL = 95% Question 4 2 pts If % = 0.025 for a condence interval for a mean when 0' is known, then which one of the follow is true? 0 O O O 2 Z Z Z 5 2 2 2 2 2 2 1.645 , and CL = 95% 1.645, and CL = 90% 1.960 , and CL = 90% 1.960 , and CL = 95% Question 5 2 pts Which one of the following formulas represents the EBM when estimating the mean of a population with a confidence interval from a sample when o is not known. O EBM = ta . - O EBM = Za O EBM = to . - Vn O EBM = Za .- Question 6 2 pts Which of the following would be the degrees of freedom (df) if a single sample of size 23 is used to estimate the mean of a population with a confidence interval when o is not known? O 24 O 23 O 21 O 22Question 6 2 pts Which of the following would be the degrees of freedom (df) if a single sample of size 23 is used to estimate the mean of a population with a confidence interval when o is not known? O 24 O 23 O 21 O 22 Question 7 4 pts Select the correct response from the dropdown menus. For a given confidence interval, if we kept the confidence level the same, but increased the sample size, the margin of error would [ Select ] and the width of the confidence interval would get [ Select ] For a given confidence interval, if we kept the sample size the same, but decreased the confidence level, the margin of error would v [ Select ] and the width of the confidence decrease interval would get [ Select ] increaseJohan and Marti were having a discussion about confidence intervals. Marti indicated that as the level of confidence increases the confidence interval gets smaller because the more confident you are the more precise your interval needs to be. Johan on the other hand indicated that as the level of confidence increases the confidence interval gets bigger because the more confident you are the wider the interval needs to be in order to capture the true population proportion within the interval. What do you think? Explain using what you have learned about margins of error