Tuesday

March 31, 2015

March 31, 2015

Posted by **Kayse** on Saturday, August 4, 2007 at 1:54am.

For many years the numbers of accidents per week at a hazardous intersection have been studied. The number of accidents per week varies with mean 2.2 and standard deveiation 1.4.

1. Could the exact distributin of the number of accidents per week be described by a normal distribution?

I've drawn the normal curve showing the mean of 2.2 in the center of the curve and deviating both directions 1.4

2. Looking at only 52 weeks we can calculate x-bar the mean number of accidents per week. What is the approximate distribution of x-bar according to the Central Limit Theorem?

N(2.2, 0.194)

3. What is the approximate probability that x-bar is greater than 2 accidents per week?

P(x-bar > 2)

4. What is the probability that there are fewer than 100 accidents at the intersection in a year?

**Answer this Question**

**Related Questions**

Statistics - I have a problem I need some help on. I have answered parts. Any ...

statistics - The number of accidents per week at a hazardous intersection ...

Statistics - From a recent statistical analysis for the last five years, on an...

PC Training & Business College - if 14 accidents can be expected at a certain ...

Statistics - Before i state my question I would like to note that I have to do a...

Algebra - Melinda earns $152 less per week then Barbra. The combined income of ...

Statistics - 2.) Car insurance companies assume that the longer a person has ...

Statistics - The number of traffic accidents per day on a certain section of ...

Calculus - At the moment OHaganBooks is selling 1000 books per week and its ...

Calculus - At the moment OHaganBooks is selling 1000 books per week and its ...