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13. A report suggests that graduating from college during bad economic times can impact the graduate's earnings potential for a long time. Time admissions director at a regional state university wants to determine if the starting salary of his college graduates has declined from 2018 to 2020. He expects the variance of the salaries to be different between these two years. He uses the dataset labeled "salaries". 14. At the 5% significance level, determine if the mean starting salary has decreased form 2018 to 2020. 15. Does changing the significance level to 10% change your conclusion in part 14? A B 1 Salary_2018 Salary_2020 2 35000 34000 3 56000 62000 4 49000 36000 5 52000 45000 6 47000 68000 7 48000 36000 8 59000 41000 9 48000 69000 10 52000 67000 11 45000 41000 12 65000 69000 13 44000 26000 14 44000 29000 15 44000 50000 16 41000 50000 17 44000 50000 18 54000 50000 19 38000 50000 20 55000 50000 21 48000 50000 22 47000 50000 23 45000 50000 24 36000 48000 25 50000 65000 26 49000 68000 27 63000 53000 28 63000 64000 29 63000 43000 30 63000 63000 31 63000 39000 32 63000 43000 33 42000 49000 34 52000 29000 35 52000 48000 36 55000 57000 37 61000 18000 38 52000 42000 39 64000 37000 40 45000 53000 41 47000 54000

13. A report suggests that graduating from college during bad economic times can impact the graduate's earnings potential for a long time. Time admissions director at a regional state university wants to determine if the starting salary of his college graduates has declined from 2018 to 2020. He expects the variance of the salaries to be different between these two years. He uses the dataset labeled "salaries". 14. At the 5% significance level, determine if the mean starting salary has decreased form 2018 to 2020. 15. Does changing the significance level to 10% change your conclusion in part 14? A B 1 Salary_2018 Salary_2020 2 35000 34000 3 56000 62000 4 49000 36000 5 52000 45000 6 47000 68000 7 48000 36000 8 59000 41000 9 48000 69000 10 52000 67000 11 45000 41000 12 65000 69000 13 44000 26000 14 44000 29000 15 44000 50000 16 41000 50000 17 44000 50000 18 54000 50000 19 38000 50000 20 55000 50000 21 48000 50000 22 47000 50000 23 45000 50000 24 36000 48000 25 50000 65000 26 49000 68000 27 63000 53000 28 63000 64000 29 63000 43000 30 63000 63000 31 63000 39000 32 63000 43000 33 42000 49000 34 52000 29000 35 52000 48000 36 55000 57000 37 61000 18000 38 52000 42000 39 64000 37000 40 45000 53000 41 47000 54000

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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13. A report suggests that graduating from college during bad economic times can impact the graduate's earnings potential for a long time. Time admissions director at a regional state university wants to determine if the starting salary of his college graduates has declined from 2018 to 2020. He expects the variance of the salaries to be different between these two years. He uses the dataset labeled "salaries". 14. At the 5% significance level, determine if the mean starting salary has decreased form 2018 to 2020. 15. Does changing the significance level to 10% change your conclusion in part 14? A B 1 Salary_2018 Salary_2020 2 35000 34000 3 56000 62000 4 49000 36000 5 52000 45000 6 47000 68000 7 48000 36000 8 59000 41000 9 48000 69000 10 52000 67000 11 45000 41000 12 65000 69000 13 44000 26000 14 44000 29000 15 44000 50000 16 41000 50000 17 44000 50000 18 54000 50000 19 38000 50000 20 55000 50000 21 48000 50000 22 47000 50000 23 45000 50000 24 36000 48000 25 50000 65000 26 49000 68000 27 63000 53000 28 63000 64000 29 63000 43000 30 63000 63000 31 63000 39000 32 63000 43000 33 42000 49000 34 52000 29000 35 52000 48000 36 55000 57000 37 61000 18000 38 52000 42000 39 64000 37000 40 45000 53000 41 47000 54000
Transcribed Image Text:13. A report suggests that graduating from college during bad economic times can impact the graduate's earnings potential for a long time. Time admissions director at a regional state university wants to determine if the starting salary of his college graduates has declined from 2018 to 2020. He expects the variance of the salaries to be different between these two years. He uses the dataset labeled "salaries". 14. At the 5% significance level, determine if the mean starting salary has decreased form 2018 to 2020. 15. Does changing the significance level to 10% change your conclusion in part 14? A B 1 Salary_2018 Salary_2020 2 35000 34000 3 56000 62000 4 49000 36000 5 52000 45000 6 47000 68000 7 48000 36000 8 59000 41000 9 48000 69000 10 52000 67000 11 45000 41000 12 65000 69000 13 44000 26000 14 44000 29000 15 44000 50000 16 41000 50000 17 44000 50000 18 54000 50000 19 38000 50000 20 55000 50000 21 48000 50000 22 47000 50000 23 45000 50000 24 36000 48000 25 50000 65000 26 49000 68000 27 63000 53000 28 63000 64000 29 63000 43000 30 63000 63000 31 63000 39000 32 63000 43000 33 42000 49000 34 52000 29000 35 52000 48000 36 55000 57000 37 61000 18000 38 52000 42000 39 64000 37000 40 45000 53000 41 47000 54000
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