Psyc 210 final Exam Questions with CORRECT Answers (Grade A+)
Question 1:
60 students that are doing either fully remote learning, hybrid school, or in-person school are asked
to take a math test and a spelling test at the end of the semester. I want to see whether type of
learning affects each subjects' scores differently.
Answer:
two-way (3 x 2), mixed design, factorial ANOVA
Question 2:
A 95% confidence interval around a given sample statistic can be interpreted as:
Answer:
We are 95% confident the true population parameter is between the upper and lower bounds of the
interval
Question 3:
The 95% confidence interval of a value tells me this
Answer:
the probability of my true population value being in that range is around 95%
Question 4:
The abbreviations for the null and alternative hypothesis (this does not depend on the specific
hypotheses)
Answer:
H0 and H1 (or Ha)
,Question 5:
According to the Central Limit Theorem, as the sample size increases, the standard error
Answer:
gets smaller
Question 6:
Alpha level corresponds to:
Answer:
The probability of a Type I Error
Question 7:
The alternative hypothesis for an independent samples, two-tailed t-test states __________.
Answer:
mu1 is not equal to mu2
Question 8:
The alternative hypothesis for a paired-samples t-test states __________.
Answer:
µ1 - µ2 not equal to 0
Question 9:
A and B are independent events. This is the probability of A AND B happening
Answer:
P(A)*P(B)
, Question 10:
Assessing how happy UNC students are on a 7- point scale (1 not very happy to 7 extremely happy)
would be best achieved using what type of scale?
Answer:
ordinal, interval
Question 11:
An assumption of the independent samples t- test is that the populations from which the samples
are drawn have equal variability. This assumption is known as:
Answer:
Homogeneity of variance
Question 12:
The average UNC student is in the 93rd percentile of ACT scores. What does this mean?
Answer:
that 93% of other ACT takers score less than the average UNC student
Question 13:
Based on the same jamovi output as in the previous question, what might we conclude?
Answer:
Anastasia and Bernadette grade differently. Specifically, Bernadette is a harsher grader than
Anastasia. Anastasia - mean is 74.5, median is 76.0, and SD is 9 Bernadette - mean is 69.1, median is
69.0, and SD is 5.77
Question 1:
60 students that are doing either fully remote learning, hybrid school, or in-person school are asked
to take a math test and a spelling test at the end of the semester. I want to see whether type of
learning affects each subjects' scores differently.
Answer:
two-way (3 x 2), mixed design, factorial ANOVA
Question 2:
A 95% confidence interval around a given sample statistic can be interpreted as:
Answer:
We are 95% confident the true population parameter is between the upper and lower bounds of the
interval
Question 3:
The 95% confidence interval of a value tells me this
Answer:
the probability of my true population value being in that range is around 95%
Question 4:
The abbreviations for the null and alternative hypothesis (this does not depend on the specific
hypotheses)
Answer:
H0 and H1 (or Ha)
,Question 5:
According to the Central Limit Theorem, as the sample size increases, the standard error
Answer:
gets smaller
Question 6:
Alpha level corresponds to:
Answer:
The probability of a Type I Error
Question 7:
The alternative hypothesis for an independent samples, two-tailed t-test states __________.
Answer:
mu1 is not equal to mu2
Question 8:
The alternative hypothesis for a paired-samples t-test states __________.
Answer:
µ1 - µ2 not equal to 0
Question 9:
A and B are independent events. This is the probability of A AND B happening
Answer:
P(A)*P(B)
, Question 10:
Assessing how happy UNC students are on a 7- point scale (1 not very happy to 7 extremely happy)
would be best achieved using what type of scale?
Answer:
ordinal, interval
Question 11:
An assumption of the independent samples t- test is that the populations from which the samples
are drawn have equal variability. This assumption is known as:
Answer:
Homogeneity of variance
Question 12:
The average UNC student is in the 93rd percentile of ACT scores. What does this mean?
Answer:
that 93% of other ACT takers score less than the average UNC student
Question 13:
Based on the same jamovi output as in the previous question, what might we conclude?
Answer:
Anastasia and Bernadette grade differently. Specifically, Bernadette is a harsher grader than
Anastasia. Anastasia - mean is 74.5, median is 76.0, and SD is 9 Bernadette - mean is 69.1, median is
69.0, and SD is 5.77
