Post a New Question


posted by .

6. According to the records of Enersource, an electric company serving the Mississauga area, the mean electricity consumption for all households during winter is 1650 kilowatt-hours per month. Assume that the monthly electricity consumption during winter by all households in this area have a normal distribution with a mean of 1650 kilowatt-hours and a standard deviation of 320 kilowatt-hours
a) Find the probability that the monthly electricity consumption during winter by a randomly selected household from this area is less than 1950 kilowatt hours.
b) What percentage of the households in this area has a monthly electricity consumption of 900 to 1300 kilowatt- hours?

  • statistics -- Stop! -

    Before you post any more questions, please go back and post your thoughts and attempts to solve these problems.

    Certainly you're not trying to get us to give you the answers!!!

  • statistics -

    a. z = (x-mean)/ sd = (1950-1650)/320

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question