S&P/ASX 200 Index (ASX: XJO) consumer staples and healthcare were the only two sectors in the green last week. The traditionally defensive sectors found favour during tough trading as investors braced for an interest rate hike on Tuesday. The benchmark index fell 0.76% over the week to close at 8,665 points, after hitting a 15-week intraday low on Friday. Traders are pricing in a 95% chance of the Reserve Bank (RBA) raising the cash rate to…