Unit 7: Inference for Means

Question 1

SE for Mean formula

Answer 1

SE: Estimate of standard deviation
s: Sample standard deviation
SE = s / √n

Question 2

One-Sample t-Test formula

Answer 2

t: t-score
μ₀: null hypothesis of population mean
t = (x̄ − μ₀) / (s / √n)

Question 3

Confidence Interval formula

Answer 3

t: Critical t-value
x̄ ± t × (s / √n)