As a group, students majoring in the engineering disciplines have the highest salary expectations, followed by those studying the computer science fields, according to a recent study. To compare the starting salaries of college graduates majoring in electrical engineering and computer science, u, and u,, respectively, random samples of 40 recent college graduates in each major were selected and the following information obtained. Major Mean ($) SD Electrical Engineering 62,309 12,600 Computer Science 57,606 13,180 (a) Do the data provide sufficient evidence to indicate a difference in average starting salaries for college graduates who majored in electrical engineering and computer science (u, - H)? Test using a = 0.05. State the null and alternative hypotheses. Но: (и1 - и2) 3 O versus Ha: (и 1 - И2) <0 Họ: (H1 – H2) = 0 versus Ha: (H1 – H2) # 0 Но: (и1 - и2) 3 O versus Ha: (и 1 - И2) > 0 Ho: (H1 - H2) < 0 versus H3: (H1 - H2) > 0 Ho: (11 — и2) # O versus Ha: (11 — "2) %3D о Find the test statistic and rejection region. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.) test statistic rejection region

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As a group, students majoring in the engineering disciplines have the highest salary expectations, followed by those studying the computer science fields, according to a
recent study. To compare the starting salaries of college graduates majoring in electrical engineering and computer science, u, and u,, respectively, random samples of 40
recent college graduates in each major were selected and the following information obtained.
Major
Mean ($)
SD
Electrical Engineering
62,309
12,600
Computer Science
57,606
13,180
(a) Do the data provide sufficient evidence to indicate a difference in average starting salaries for college graduates who majored in electrical engineering and computer
science (u, - H)? Test using a = 0.05.
State the null and alternative hypotheses.
Но: (и1 - и2) 3 O versus Ha: (и 1 - И2) <0
Họ: (H1 – H2) = 0 versus Ha: (H1 – H2) # 0
Но: (и1 - и2) 3 O versus Ha: (и 1 - И2) > 0
Ho: (H1 - H2) < 0 versus H3: (H1 - H2) > 0
Ho: (11 — и2) # O versus Ha: (11 — "2) %3D о
Find the test statistic and rejection region. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.)
test statistic
rejection region
Transcribed Image Text:As a group, students majoring in the engineering disciplines have the highest salary expectations, followed by those studying the computer science fields, according to a recent study. To compare the starting salaries of college graduates majoring in electrical engineering and computer science, u, and u,, respectively, random samples of 40 recent college graduates in each major were selected and the following information obtained. Major Mean ($) SD Electrical Engineering 62,309 12,600 Computer Science 57,606 13,180 (a) Do the data provide sufficient evidence to indicate a difference in average starting salaries for college graduates who majored in electrical engineering and computer science (u, - H)? Test using a = 0.05. State the null and alternative hypotheses. Но: (и1 - и2) 3 O versus Ha: (и 1 - И2) <0 Họ: (H1 – H2) = 0 versus Ha: (H1 – H2) # 0 Но: (и1 - и2) 3 O versus Ha: (и 1 - И2) > 0 Ho: (H1 - H2) < 0 versus H3: (H1 - H2) > 0 Ho: (11 — и2) # O versus Ha: (11 — "2) %3D о Find the test statistic and rejection region. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.) test statistic rejection region
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