Therefore, the research hypothesis is that people drive red cars at different speeds than people drive white cars.

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A researcher thinks that people who drive red cars drive differently than
people who drive white cars. She randomly assigns people to drive either
a red (N = 4) or white (N = 4) car and then records their speed as they are
driving through a school zone (where the speed limit is 20 MPH).
The raw data is below (in MPH):
Red car condition: 18, 32, 20, 30
White car condition: 23, 12, 21, 16
Therefore, the research hypothesis is that people drive red cars at different
speeds than people drive white cars.
Which test would you use: independent samples t-test
Step 1. Express the substantive question as two statistical hypotheses.
Ho:
µ1 =
♦ μου
H₁: μ1
I
μο
=> 0
Step 2. Draw the sampling distribution under the null hypothesis using the p < .05 as the
criterion for statistical significance to determine the critical values.
What is the center of the distribution? M1 =
What are the critical values? + 2.447
Step 3. Compute the statistics.
0
MO-
3 decimal places
= ◆
O
Transcribed Image Text:A researcher thinks that people who drive red cars drive differently than people who drive white cars. She randomly assigns people to drive either a red (N = 4) or white (N = 4) car and then records their speed as they are driving through a school zone (where the speed limit is 20 MPH). The raw data is below (in MPH): Red car condition: 18, 32, 20, 30 White car condition: 23, 12, 21, 16 Therefore, the research hypothesis is that people drive red cars at different speeds than people drive white cars. Which test would you use: independent samples t-test Step 1. Express the substantive question as two statistical hypotheses. Ho: µ1 = ♦ μου H₁: μ1 I μο => 0 Step 2. Draw the sampling distribution under the null hypothesis using the p < .05 as the criterion for statistical significance to determine the critical values. What is the center of the distribution? M1 = What are the critical values? + 2.447 Step 3. Compute the statistics. 0 MO- 3 decimal places = ◆ O
Mean
SS
S²
SD
Red car condition
SEDifference =
Use the above information to select all the missing words in the APA style conclusion:
White car condition
Report all values (except df) to TWO decimal places.
On average, participants drove
Importantly,
statistically significant,
difference between the two means
Results
), compared to when they were driving a white car (M =
effect size indicated there was a
when they were driving a red car (M =
showed that the difference
р
, SD =
◆ include zero [
◆ .05 and the 95% CI around the
standardized treatment effect (
◄►
SD
J. The d-
=
Transcribed Image Text:Mean SS S² SD Red car condition SEDifference = Use the above information to select all the missing words in the APA style conclusion: White car condition Report all values (except df) to TWO decimal places. On average, participants drove Importantly, statistically significant, difference between the two means Results ), compared to when they were driving a white car (M = effect size indicated there was a when they were driving a red car (M = showed that the difference р , SD = ◆ include zero [ ◆ .05 and the 95% CI around the standardized treatment effect ( ◄► SD J. The d- =
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