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Vacation Hours QUESTION 11 At 95% confidence level, establish an interval estimate of the average 400 vacation hours for all employees. (5 marks) Vacation Hours M A W N 200 20 Mean 157.220339 160 Standard Error 3. 782755931 (a) Find the point estimate 204 Mediar 144 220 110 Mode 110 Standard Deviation 67.46162838 122 Sample Variance 4551.071303 65 Kurtosis 0.218977325 220 Skewness 0.536169713 200 (b) Find the margin of error: Rang 326 85 24 Minimum 100 350 Maximum 260 3276 Sum 80 59 Cour 110 Confidence Level(95.0%) 17.58059611 110 (c) Find the interval estimate: Upper CI (95%) 174.8009351 75 Lower CI (95%) 139.6397429 220 220 240 24 245 (d) Interpret the result: 250 200 110 220 110 90 110 166 100 110 160 180 100 110 220 100 200 155 180 60 125 145 144 290 350 120 140 155 140 105 90 277 90 120 260 220 100B C D E F G K M N O Years of Work No of Job Errors QUESTION 15 Experiences (X) (Y) Construct a scatterplot and a trendline to visualize the relationship between work experience (X) and number of errors on the job (Y). (4 marks) Describe the relationship: Field: Years of Work Experiences (X) and Field: No of Job Errors (Y) appear highly correlated. No of Job Errors (Y) .. ..4 10 15 20 25 30 35 Years of Work Experiences (X)E21 X fx D G H Years of Work No of Job Errors QUESTION 16 Experiences (X) (Y) Compute the correlation coefficient to describe the relationship between work experience (X) and the number of errors on the job (Y). (4 marks) 33 26 17 Interpret the direction and strength of the relationship: 20 Years of Work Experiences (X) No of Job Errors (Y) Years of Work Experiences (X) -0.600385868 No of Job Errors (Y) -0.600385868