Question: Warm up those calculators! Using the following information, calculate the t-test statistic by hand.

a. \[\overline{x}\] ₁ = 62 \[\overline{x}\] ₂ = 60 n₁ = 10 n₂ = 10 s₁² = 6 s₂² = 10

b. \[\overline{x}\] ₁ = 158 \[\overline{x}\] ₂ = 157.4 n₁ = 22 n₂ = 26 s₁² = 4.23 s₂² = 6.73

c. \[\overline{x}\] ₁ = 200 \[\overline{x}\] ₂ = 198 n₁ = 17 n₂ = 17 s₁² = 6 s₂² = 5.5