The students in a typing class have a mean typing rate of 38.2 words per minute. Five randomly selected students have typing rates of 32, 28, 41, 38, and 45 words per minute. What is the value of μ and x¯ ?

μ = 38.2 wpm, x¯ = 38.0 wpm

μ = 36.8 wpm, x¯ = 38.2 wpm

μ = 38.2 wpm, x¯ = 36.8 wpm

μ = 38.0 wpm, x¯ = 38.2 wpm

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality