Data Were Collected from CEOs in the Consumer Products Industry $X =$

question 78

Multiple Choice

Data were collected from CEOs in the consumer products industry and the CEOs in the telecommunication industry. The data were analyzed using a software package in order to compare mean salaries of CEOs in the two industries.

HYPOTHESIS: MEAN X = MEAN Y
SAMPLES SELECTED FROM SALARY
$X =$ Consumer Products
$\mathrm { Y } =$ Telecommunications

SAMPLE MEAN OF $X = 1761$
SAMPLE VARIANCE OF $X = \quad 3.97555$ E6
SAMPLE SIZE OF $X = 21$
SAMPLE MEAN OF $Y = 1093.5$
SAMPLE VARIANCE OF $Y = 103255$
SAMPLE SIZE OF $\mathrm { Y } = \quad 21$


MEAN X-MEAN $\mathrm { Y } = \quad 667.5$
test statistic $= \quad 1.47809$
D. F. $= 40$
P-VALUE $= \quad 0.147626$
P-VALUE $/ 2 = 0.0738131$
SD. ERROR $= 451.597$


Using $\alpha = .05$ , give the rejection region for a two-tailed test.

• A) Reject \(H _ { 0 }\) if \(t > 1.684\).
• B) Reject \(H _ { 0 }\) if \(t > 1.684\) or \(t < - 1.684\).
• C) Reject \(H _ { 0 }\) if \(t > 2.021\).
• D) Reject \(H _ { 0 }\) if \(t > 2.021\) or \(t < - 2.021\).

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Definitions:

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