Business statistics · IS 310 and equivalents
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A real exchange
My p-value is 0.032 and alpha is 0.05. Do I reject the null or not?
Before I say — what does that 0.032 actually measure? Say it in your own words.
The chance the null hypothesis is true?
That's the one everybody gets wrong, and it's why the exam question trips people. It's the chance of seeing data this extreme if the null were true. Try the decision again with that.
Not a general homework bot. The three topics behind most of the failing grades in this course.
Null versus alternative, one tail or two, and what the p-value is actually telling you.
H₀ : μ = μ₀ · reject if p < α
Why it isn't "95% chance the mean is in here," and how to build one that survives a follow-up question.
x̄ ± t(α/2) · s/√n
The block of numbers Excel hands you, line by line, until you can defend every one.
R² · adj R² · coef · SE · t · P>|t|
Why this isn't ChatGPT
You paste the question, you get the solution, you turn in the homework. Then the midterm asks it sideways and there's nothing to fall back on. This one asks you questions until you can do it yourself — annoying on a Tuesday, the whole point in week nine.
Upload your syllabus once. It picks up your notation, your chapter order, and your exam dates — so the practice you get in week six is the material on the test in week seven.
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A private stats tutor near campus runs about $70 an hour. This is unlimited, and it's awake at 11pm.