t-test
Inferential
A False positive is a ... error.
Type I
95%
The smaller the p-value, the stronger the evidence FOR the ________ hypothesis.
RESEARCH
A null hypothesis means there is...
NO difference
T-tests compare the means of how many groups?
Two
A false negative is a ... error.
Type II
Margin of Error is expressed with a ______ sign.
+/-
The most common alpha level is ______, or ____%.
0.05, 5
A research hypothesis means there is
A DIFFERENCE
Independent samples are used for _______ subjects.
Between
A Type I Error means the null hypothesis is _____, BUT the null hypothesis was ______.
TRUE, REJECTED
Confidence Intervals are written as [____, ____]
Lower Limit, Upper Limit
To accept a research hypothesis, the p-value should be less than _____ .
0.05
Rejecting the null hypothesis is _________ the research hypothesis.
Accepting
Paired samples are used for _______ subjects.
Within
A Type II Error means the null hypothesis is _____, BUT the null hypothesis was _____.
FALSE, ACCEPTED
Margin of Error is ______ the width of the Confidence Interval
Half
TRUE OR FALSE
p=0.34 is statistically significant
FALSE
The population means are NOT equal in a _______ hypothesis.
RESEARCH
The 3 assumptions for a t-test
1. Is Independent
2. Normally Distributed
3. Similar Variance
If a child is NOT diagnosed with ADHD, but has ADHD, it is a ___ ___ error.
Type II
If a professor is 89% sure that the class prepared for the upcoming exam with a margin of error of +/-4, what is the confidence interval?
[85%, 93%]
TRUE OR FALSE
A p-value below the common alpha level does NOT have statistical significance.
FALSE
In a ______ hypothesis, the IV has NO effect.
Null