Tuesday
September 2, 2014

Homework Help: Statistics

Posted by Steve on Saturday, May 10, 2008 at 11:23pm.

200 people were sampled and the following table shows the number of people with a certain average electric energy usage based upon the type of home an individual lives in:

Electric Usage (in kWh)
Type of Dwelling < 5,000 5,000 7,000 7,000 11,000 11,000 15,000 Total
Single Family 15 35 65 25 140
Multi-Family 25 15 15 5 60
Total 40 50 80 30 200

a) What is the probability of selecting someone who uses between 7,000 and 11,000 kWh?
b) What is the probability of randomly selecting someone who uses less than 5,000 kWh and who lives in a multi-family dwelling?
c) What is the probability of selecting someone who lives in a single family dwelling or uses between 5,000 and 7,000 kWh?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

StatIstics - "Household size" is defined as the number of people living in a ...
Parable revision - "Give what you have, not what you want in the future"(This is...
statistics - Data shows that 88% of the people in a certain population are right...
Statistics - In the following question, identify which choices would be ...
Eth 125 - What differentiates that act of simply grouping people from the act of...
College algebra - A person is driving a car on a straight road. The graph shows ...
algebra - Please I'm stuck!!!!! A person is driving a car on a straight road. ...
Math - The table shows the number of people switching to a new ...
Statistics - Of 500 randomly selected people in new york city, 210 people had O...
Statistics - 1. A study of 40 people found that they could do on the average15 ...

Search
Members