The mixture produced, however, is not a statistical mixture: Secondary and tertiary hydrogen atoms are preferentially replaced due to the greater stability of secondary and tertiary free-radicals.
ðə mˈɪkstʃɚ pɹədˈuːst, haʊˈɛvɚ, ɪz nˌɑːɾə stɐtˈɪstɪkəl mˈɪkstʃɚ: sˈɛkəndɚɹi ænd tˈɜːʃjɚɹi hˈaɪdɹədʒən ˈæɾəmz ɑːɹ pɹˌɛfɚɹˈɛnʃəli ɹᵻplˈeɪst dˈuː tə ðə ɡɹˈeɪɾɚ stəbˈɪlᵻɾi ʌv sˈɛkəndɚɹi ænd tˈɜːʃjɚɹi fɹˈiːɹˈædɪkəlz.