Michelle, a primary school teacher, administered an age-appropriate IQ test to all of her students in her class. The true population mean for the IQ test Michelle administered is 100, with a standard deviation of 15. Michelle discovered that the 25 students in her class scored 128 on average. In order to examine whether Michelle’s students scored differently compared to the general population, Michelle should use a Q1.. This test revealed that the mean IQ of Michelle’s students was Q2. than that expected from children their age, Q3. = Q4. , Q5.. On the basis of this result, Michelle should decide to Q6.. Possible answers for Q1: A) a single sample t-test B) a single sample z-test C) a repeated measures t-test D) an independent groups t-test Possible answers for Q2: A) significantly higher B) no different C) slightly higher D) significantly lower Possible answers for Q3: A) t(25) B) t(23) C) t(24) D) z Possible answers for Q4: A) 46.67 B) 9.33 C) 1.87 D) 2.07 Possible answers for Q5: A) ns B) p = .05 C) p < .05 D) p > .05 Possible answers for Q6: A) reject the null hypothesis B) retain the null hypothesis C) redo her analyses D) reject the alternative hypothesis
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Michelle, a primary school teacher, administered an age-appropriate IQ test to all of her students in her class. The true population mean for the IQ test Michelle administered is 100, with a standard deviation of 15. Michelle discovered that the 25 students in her class scored 128 on average.
In order to examine whether Michelle’s students scored differently compared to the general population, Michelle should use a Q1.. This test revealed that the mean IQ of Michelle’s students was Q2. than that expected from children their age, Q3. = Q4. , Q5.. On the basis of this result, Michelle should decide to Q6..
Possible answers for Q1:
A) a single sample t-test
B) a single sample z-test
C) a repeated measures t-test
D) an independent groups t-testPossible answers for Q2:
A) significantly higher
B) no different
C) slightly higher
D) significantly lowerPossible answers for Q3:
A) t(25)
B) t(23)
C) t(24)
D) zPossible answers for Q4:
A) 46.67
B) 9.33
C) 1.87
D) 2.07Possible answers for Q5:
A) ns
B) p = .05
C) p < .05
D) p > .05Possible answers for Q6:
A) reject the null hypothesis
B) retain the null hypothesis
C) redo her analyses
D) reject the alternative hypothesis
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