Using JASP’s built-in dataset ToothGrowth (File → Data Library → ToothGrowth), test whether mean tooth length (len) differs by supplement type (supp: OJ vs VC) with an Independent Samples t-test.
Requirements:

1. In JASP, run the t-test with: Descriptives, Confidence Interval (95%), Cohen’s d, Levene’s test, normality check, and a boxplot/violin plot.

2. Attach your JASP print screen of the full results (output table(s) and plot).

3. Provide a numbered list of the exact steps you followed in JASP so someone else can replicate your result (menu path, options ticked, plots added, any data filters if used).

4. In 3–4 sentences, briefly state your hypotheses, test result (t, df, p), effect size, and a plain-English interpretation