Advanced Psychological Statistics Final
Exam 2025/2026 Exam Questions with
100% Correct Answers | Latest Update
You sample randomly and independently from a population. Everything
else being equal, a sample wit this size should yield the best estimators of
the population parameters. - 🧠 ANSWER ✔✔a large sample
You do a study on whether an antidepressant drug is effective and show
that there is a significant difference between people who do and who don't
get the drugs in terms of their depressive symptoms. In reality, the drug
does not work. You.. - 🧠 ANSWER ✔✔committed a type 1 error
You develop a new drug for the treatment of depression. You give this drug
to 30 volunteers but withhold it from 30 others (you give them a sugar pill
instead). You then measure the difference in depression symptoms before
, and after via the Beck Depression Inventory (BDI) in both groups. You
calculate that the probability of obtaining the observed difference in mean
BDI scores between groups is 0.06. Given this situation, the most
reasonable course of action is to - 🧠 ANSWER ✔✔Do a new study with a
larger number of participants to discern whether the drug has a modest
effect that was unlikely to be detected, given the small sample size
As you increase the sample size, the standard error of the means (SEM) - 🧠
ANSWER ✔✔decreases as a function of the square root of the sample size
You randomly sample 5 inmates in a maximum security prison. You note
that all 5 exhibit levels of aggression that are higher than the median of the
general population. The probability of obtaining this result by chance (if
inmates in maximum security prisons do not differ in their levels of
aggression from the general population) is - 🧠 ANSWER ✔✔.0313
Assuming a large sample size (n > 100) and assuming that you sample
randomly and independently, the distribution of sample means - 🧠
ANSWER ✔✔approaches a normal distribution
You want to develop a drug to increase IQ. So far, you have created 4
candidate substances - A, B, C and D. They all shifted the group IQ mean
Exam 2025/2026 Exam Questions with
100% Correct Answers | Latest Update
You sample randomly and independently from a population. Everything
else being equal, a sample wit this size should yield the best estimators of
the population parameters. - 🧠 ANSWER ✔✔a large sample
You do a study on whether an antidepressant drug is effective and show
that there is a significant difference between people who do and who don't
get the drugs in terms of their depressive symptoms. In reality, the drug
does not work. You.. - 🧠 ANSWER ✔✔committed a type 1 error
You develop a new drug for the treatment of depression. You give this drug
to 30 volunteers but withhold it from 30 others (you give them a sugar pill
instead). You then measure the difference in depression symptoms before
, and after via the Beck Depression Inventory (BDI) in both groups. You
calculate that the probability of obtaining the observed difference in mean
BDI scores between groups is 0.06. Given this situation, the most
reasonable course of action is to - 🧠 ANSWER ✔✔Do a new study with a
larger number of participants to discern whether the drug has a modest
effect that was unlikely to be detected, given the small sample size
As you increase the sample size, the standard error of the means (SEM) - 🧠
ANSWER ✔✔decreases as a function of the square root of the sample size
You randomly sample 5 inmates in a maximum security prison. You note
that all 5 exhibit levels of aggression that are higher than the median of the
general population. The probability of obtaining this result by chance (if
inmates in maximum security prisons do not differ in their levels of
aggression from the general population) is - 🧠 ANSWER ✔✔.0313
Assuming a large sample size (n > 100) and assuming that you sample
randomly and independently, the distribution of sample means - 🧠
ANSWER ✔✔approaches a normal distribution
You want to develop a drug to increase IQ. So far, you have created 4
candidate substances - A, B, C and D. They all shifted the group IQ mean
