CNSL 503 - Exam 4 Question and answers rated A+
2025/2026
1. What is purpose
To understand a score's relative standing within a distribution. z-score
of calculating Z-
stan- dardizes scores from ditterent data sets with ditterent
scores?
means.
2. Formula for
z=X-u /
calculat- ing z-
sigma X is
score from a
score
sample mean
Mu is mean
Sigma is standard deviation
3. What is purpose
Shows the proportion of values that fall to the left (or below) of a given
of a standard
z-score in a normal distribution.
normal table?
4. How to find
p-value
percent- age
above z-score?
1. State null hypothesis and alternative hypothesis. 2. Determine the
5. Steps for
critical values. 3. Calculate the z-score. 4. Compare the z-score to the
Hypothesis
critical value and determine whether to reject null hypothesis.
Testing using z-
score
6. One-tailed test directional test that specifies whether the population mean increases
or
decreases after the treatment. May be left or right tail.
7. What is a right- A test used on a hypothesis when the critical region is on the right side
tailed test? of the distribution.
8. Where is the On the right side of the distribution.
critical region
located in a
right-tailed test?
1/
7
, 9. right-tailed test A one-tailed test in which the sample outcome is hypothesized to be
at the right tail of the sampling distribution.
10. right-tailed test Tests if parameter is greater than a value.
2/
7
2025/2026
1. What is purpose
To understand a score's relative standing within a distribution. z-score
of calculating Z-
stan- dardizes scores from ditterent data sets with ditterent
scores?
means.
2. Formula for
z=X-u /
calculat- ing z-
sigma X is
score from a
score
sample mean
Mu is mean
Sigma is standard deviation
3. What is purpose
Shows the proportion of values that fall to the left (or below) of a given
of a standard
z-score in a normal distribution.
normal table?
4. How to find
p-value
percent- age
above z-score?
1. State null hypothesis and alternative hypothesis. 2. Determine the
5. Steps for
critical values. 3. Calculate the z-score. 4. Compare the z-score to the
Hypothesis
critical value and determine whether to reject null hypothesis.
Testing using z-
score
6. One-tailed test directional test that specifies whether the population mean increases
or
decreases after the treatment. May be left or right tail.
7. What is a right- A test used on a hypothesis when the critical region is on the right side
tailed test? of the distribution.
8. Where is the On the right side of the distribution.
critical region
located in a
right-tailed test?
1/
7
, 9. right-tailed test A one-tailed test in which the sample outcome is hypothesized to be
at the right tail of the sampling distribution.
10. right-tailed test Tests if parameter is greater than a value.
2/
7
