Unit 4 Formula Sheet
| Claim has \( =,\ \ \le,\ \ \geq \) | Claim has \( \neq,\ <,\ \ > \) | |
|---|---|---|
| Claim is null hypothesis | Claim is alternate hypothesis | |
| Reject the null hypothesis | “There is sufficient sample evidence to reject the claim that…” | “There is sufficient sample evidence to support the claim that…” |
| Fail to reject the null hypothesis | “There is not sufficient sample evidence to reject the claim that…” | “There is not sufficient sample evidence to support the claim that…” |
Equation of a Regression Line:
\(\widehat y=mx+b\)
Unit 4 StatCrunch Instructions
Hypothesis Testing for Proportions
- Stat
- Proportion Stats
- One Sample
-
WITH SUMMARY: Enter successes, total, and sample size
WITH DATA: Select column
- Put in Null & Alternative Hypothesis
- Check Show Critical Value Box
- Put in Significance (alpha)
- Compute
Hypothesis Testing for the MEAN
- Stat
- T Stat
- One Sample
-
WITH SUMMARY: Enter sample mean, SD, and sample size
WITH DATA: Select column
- Put in Null & Alternative Hypothesis
- Check Show Critical Value Box
- Put in Significance (alpha)
- Compute
Hypothesis Testing for Linear Regression
- Stat
- Regression
- Simple Linear
- Choose x-variable
- Choose y-variable
- Put in Null & Alternative Hypothesis
- Compute
- r=correlation coefficient
- Test Statistic is the T-Stat from SLOPE
- P-value from SLOPE
Hypothesis Testing for Test for Independence
- Stat
- Tables
- Contingency
- WITH SUMMARY:
- Select columns: Choose columns where counts are
- Row Labels: var1 (always)
- Hypothesis Tests: Chi-Square Test for Independence
- Compute
Hypothesis Testing for Paired T-test
- Stat
- T Stats
- Paired
- Select Columns
- Choose \(\neq, < or >\) for \(H_A\)
- Compute