Conscientiousness is a tendency to show self-discipline, act dutifully, and aim for achievement. The trait shows a preference for planned rather than spontaneous behavior. A random sample of 650 students is asked to fill out the Hogan Personality Inventory (HPI) to measure their level of conscientiousness. The 350 graduate students had a mean score of 153 with a standard deviation of 21. The 300 undergraduate students scored an average of 148 with a standard deviation of 16. We are interested in determining whether graduate students score higher, on average, on the HPI than undergraduate students. What are the appropriate null and alternative hypotheses? O Ho: HG HUG # 0 and Ha: HG- HUG = 0 Ho: HG HUG= 0 and Ha: HG- HUG < 0 O Ho: HG HUG = 0 and Ha: HG- HUGO O Ho: HG HUG = 0 and Ha: HG- HUG > 0

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Conscientiousness is a tendency to show self-discipline, act dutifully, and
aim for achievement. The trait shows a preference for planned rather than
spontaneous behavior. A random sample of 650 students is asked to fill out
the Hogan Personality Inventory (HPI) to measure their level of
conscientiousness. The 350 graduate students had a mean score of 153
with a standard deviation of 21. The 300 undergraduate students scored
an average of 148 with a standard deviation of 16. We are interested in
determining whether graduate students score higher, on average, on the
HPI than undergraduate students. What are the appropriate null and
alternative hypotheses?
$
4
R
O Ho: HG- HUG # 0 and Ha: HG- HUG = 0
O Ho: HG- HUG = 0 and Ha: HG- HUGO
O Ho: HG HUG = 0 and H₂: HG- HUG #0
O Ho: HG- HUG = 0 and H₂: HG- HUG > O
tv
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Q Search or enter address
5
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6
MacBook Pro
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7
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8
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9
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0
Transcribed Image Text:Conscientiousness is a tendency to show self-discipline, act dutifully, and aim for achievement. The trait shows a preference for planned rather than spontaneous behavior. A random sample of 650 students is asked to fill out the Hogan Personality Inventory (HPI) to measure their level of conscientiousness. The 350 graduate students had a mean score of 153 with a standard deviation of 21. The 300 undergraduate students scored an average of 148 with a standard deviation of 16. We are interested in determining whether graduate students score higher, on average, on the HPI than undergraduate students. What are the appropriate null and alternative hypotheses? $ 4 R O Ho: HG- HUG # 0 and Ha: HG- HUG = 0 O Ho: HG- HUG = 0 and Ha: HG- HUGO O Ho: HG HUG = 0 and H₂: HG- HUG #0 O Ho: HG- HUG = 0 and H₂: HG- HUG > O tv % Q Search or enter address 5 e T A 6 MacBook Pro Y A & 7 U * 8 ↑ - ( 9 O ) 0
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