English to Portuguese Other Environment & Ecology Estudo para gerenciamento de resíduos sólidos

Eu agradeceria ajuda para traduzir adequadamente a expressão indicada, no contexto abaixo:

"...for the recommended 90% confidence level, twosided
test, Z = 1.645 and S = 0.1632, transformed (arcsin)
basis (as defined in CIWMB, 1990), and assuming that
paper is the category with the largest mean at 30% and
the desired precision is 10%,..."

Obrigada,

Christina.