Posted by **aaron** on Sunday, October 18, 2009 at 10:30pm.

The unemployment rate is 5.8% (Bureau of Labor Statistics, April 3, 2003). Suppose that 100 employable people are selected randomly.

1)What is the probability that exactly six people are unemployed (to 4 decimals)?

2)What is the probability that exactly six people are unemployed (to 4 decimals)?

3)What is the probability that at least four people are unemployed (to 4 decimals)?

- statistics math -
**economyst**, Monday, October 19, 2009 at 11:44am
An excel spreadsheet is very helpful

for these kinds of calculations.

You could calculate these pobabilities directly. Or, you could use a poisson distribution. I'll use a Poisson here.

the formula for the poisson is

P(k;l) = (l^k)*e^(-l) / k!

where l is the expected number = 5.8

and k is the observed number.

so for 1 (and 2, they are identical)

P(k;l) = 5.8^6 *e^(-5.8) / (1*2*3*4*5*6)

= .16

take it from here.

- statistics math -
**Anonymous**, Monday, November 5, 2012 at 9:08pm
klkkl

## Answer This Question

## Related Questions

- Statistics - 90% of population is unemployed. Assume 10 employable people are to...
- admas - the true unemployment rate is 7% assume that 100 employable people are ...
- Statistics - The U.S. Department of Labor and Statistics released the current ...
- macroeconomics - (1) Population: 250,000 Unemployed: 20,000 Labor Force ...
- statistics - Find the probability that among six randomly selected people, ...
- Macroeconomics* Please check my answers* - If real GDP per capita grows at a ...
- math - Tx unemployment rate is 7.2% If a total of 390,000 people who are able ...
- Statistics - Of 500 randomly selected people in new york city, 210 people had O...
- statistics - Suppose that in a large population the proportion of people that ...
- Statistics (36) - For borrowers with good credit scores, the mean debt for ...

More Related Questions