Posted by **darlene** on Tuesday, February 14, 2012 at 12:08am.

a factory produces 150,000 lightbulbs per day. the manager of the factory estimates that fewer than 1,000 defictive bulbs are produced each day . in a random sample of 250 lightbulbs , there are 2 defictive bulbs . determine whether the managers estimate is likely to be accurate. explain.

- math -
**Henry**, Thursday, February 16, 2012 at 4:35pm
% Estimated=(1000/150000) * 100%=0.67 %

% Defective = (2/250) * 100% = 0.8 %.

(0.8% /0.67%) * 100% = 119%.

119% - 100% = 19 %.

The actual % is about 19% higher than the estimated %.

- math -
**Sassy**, Tuesday, November 18, 2014 at 7:22pm
Set up the proportion 150,000 over x= 250 over two. Cross multiply 150000 and two to get 300000. Set up the equation 300,000=250x. Divide both sides with 250 to get the answer.

## Answer This Question

## Related Questions

- Accounting - During the period, labor costs incurred on account amounted to $...
- accounting - 6. Acme Manufacturing Company estimates factory overhead as a ...
- Statistics - A certain type of lightbulb is advertised to have an average ...
- statistics - Factories A, B and C produce computers. Factory A produces 3 times ...
- Statistics/Probability - A factory produces a particular type of electronic ...
- Integers - Billy buys 3 doze light bulbs. After changing the lightbulbs in the ...
- math / linear programming - Two factories manufacture 3 different grades of ...
- PROBABILITIES - Factories A and B produce computers. Factory A produces 3 times ...
- Probability - Factories A and B produce computers. Factory A produces 2 times as...
- accounting - ABC's Product information Current Product Expansion Product (...

More Related Questions