(d) . 67 Question 6 You are an accounts analyst for an electrical billing company. According to industry statistics, for the three hottest months of summer, homeowners spend on average $441.84 for total electrical utility cost (standard deviation of $90). How much does a household have to spend to be in the top 20% of electrical users? a) between $531.84 and $621.84 b) $531.84 or more O c) $517.44 or less O d) $517.44 or more Question 8