Question 11 (1 point) Assume you have a t-test for the difference between two means: Ho : M1 - M2 = 0 HA : M1 - 12 # 0 From a survey, you know that 1 =90, y2 =70, and SE ( V - y =3.3. After calculating the degree of freedom, you use software to find the corresponding critical value for a 95% confidence interval to be 2.3. Construct the 95% confidence interval for the mean and report the upper limit. Note: 1- Only round your final answer to the nearest integer. Your Answer: Answer Question 12 (1 point) Assume you have a t-test for the difference between two means: Ho : M1 - M2 =1, HA : M1 - M2 #1. From a survey, you know that y 1 =100, y2 =81, n1 =60, n2 =54, 51 =8, and $2 =7. Find the t-statistic (test statistic) of the test. Note: 1- Do not round any intermediate numbers. 2- Only round your final answer to 2 decimal places. Enter your final answer with 2 decimal places. Your Answer: AnswerQuestion 13 [1 point) Consider the following basic statistics describing a data set: n = 30, ? = 2166.07, 5 = 72.41 What is the margin of error for the calculation for a 95% level of confidence? Note: 1- Round your intermediate numbers to 4 decimal places. 2- Round you final answer to 3 decimal places. Enter your final answer to 3 decimal places. Your Answer: :l Answer Question 14 [1 point) Suppose we want to test if the average take-home salary of employees working for a large multi-national company is greater than $4600. We collect a random sample of 53 employees and realize that the sample mean and standard deviations are $4035 and $636. respectively. What is the test statistic (t-static} associated with this test? Note: 1- Round your intermediate numbers to 4 decimal places. 2- Round you final answer to 3 decimal places. Enter your final answer to 3 decimal places. Your Answer: :l Answer Question 15 [1 point) Hoping to attract more shoppers downtownI a city builds a new public parking garage in the central business district. The city plans to pay for the structure through parking fees. For a random sample of 46 weekdays, daily fees collected averaged $14900 with a standard deviation of $11.00. Find a 90% confidence interval for the mean daily income this parking garage will generate and report the lower limit. Note: 1- Only round your final answer to the nearest integer. Your Answer: :]