Question 1 3 pts Suppose annual salaries for accounting associates from a accounting rm have a mean of $40,500 and a standard deviation of $2.200. Calculate and interpret the z-score for a sales associate 1who makes $46,500. Answer convention: xxx (ex. 3.151 Question 2 AnirnoSpa-ce Support 0 The following data represent the rlail'glr demand [y in thousands of units) and the unit price is in dollars} for a product. Daily Demand {3:} Unit Price [1} 43 1 39 3 35 5 44 3 34 s 20 s 15 16 30 a C: it indicates a negative relationship between 1-: and y. C) it indicates a positive relationship between x and y. C) no apparent relationship 0 No answer text provided. Compute the weighted mean for the following data. Answer convention: 30:: [ex 12} Weight {W 12 30 23 10 Question 4 3 pts The starting salaries of a sample of college students are given below. Compute for the mean for grouped data. Answer convention: xxx}: . (ex. 35.51] Starting Salary:r Frequent-1.r {$100051 10-14 15 - 1'9 20 - 24 25 - 29 30 - 34 35 - 39 D Question 5 3 pts The starting salaries of a sample of college students are given below. Compute for the variance for grouped data. Answer convention: xx.xx (ex. 58.72) Starting Salary Frequency ($1000s) 10-14 5 15 - 19 3 20 - 24 5 25 - 29 7 30 - 34 3 35 - 39 4D Question 6 3 pts The starting salaries of a sample of college students are given below. Compute for the standard deviation for grouped data. Answer convention: x.xx (ex. 7.72) Starting Salary Frequency ($1000s) 10-14 5 15 - 19 3 20 - 24 25 - 29 30 - 34 35 - 39 4D Question 7 3 pts The starting salaries of a sample of college students are given below. Compute for the coefficient variation for grouped data. Same formula, standard deviation / mean : Answer convention: xx.xx (ex. 55.55) Starting Salary Frequency ($1000s) 10-14 15 - 19 20 - 24 W y U W U 25 - 29 30 - 34 35 - 39 4D Question 8 3 pts Calculate the Covariance. Answer Convention: xx.xx (ex. 15.55) Note: Encode using excel, don't round off immediately the mean and the standard deviation. You may compare your answer using COVARIANCE.S y X 4 3 13 15 4 21 5 22 12 32 15 9 18 7 8D Question 9 3 pts Calculate the Correlation Coefficient. Answer Convention: .xx (ex. .55) Note: Encode using excel, don't round off immediately the mean and the standard deviation. You may compare your answer using CORREL X 4 3 13 15 4 21 5 22 12 32 15 9 18 8