The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude, and study habits of college students. Scores range from 0 to 200 and follow (approximately) a Normal distribution with a mean of 115 and a standard deviation of 25. You suspect that incoming freshmen at your school have a mean µ, which is different from 115 because they are often excited yet anxious about entering college. To test your suspicion, you decide to test the hypotheses Ho: µ= 115 versus Ha: u#115. You give the SSHA to 25 incoming freshmen and find their mean score to be 116.2. What is the value of the test statistic? z = 0.048 A) = 0.24 = 1.2 B) z= C) z D) z = 1.96

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The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures
the motivation, attitude, and study habits of college students. Scores range from 0 to 200
and follow (approximately) a Normal distribution with a mean of 115 and a standard
deviation of 25. You suspect that incoming freshmen at your school have a mean 4,
which is different from 115 because they are often excited yet anxious about entering
college. To test your suspicion, you decide to test the hypotheses Ho: u= 115 versus Ha:
µ#115. You give the SSHA to 25 incoming freshmen and find their mean score to be
116.2. What is the value of the test statistic?
A) z=
=0.048
B) z= 0.24
C) z= 1.2
D) z= 1.96
Transcribed Image Text:The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude, and study habits of college students. Scores range from 0 to 200 and follow (approximately) a Normal distribution with a mean of 115 and a standard deviation of 25. You suspect that incoming freshmen at your school have a mean 4, which is different from 115 because they are often excited yet anxious about entering college. To test your suspicion, you decide to test the hypotheses Ho: u= 115 versus Ha: µ#115. You give the SSHA to 25 incoming freshmen and find their mean score to be 116.2. What is the value of the test statistic? A) z= =0.048 B) z= 0.24 C) z= 1.2 D) z= 1.96
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