Sunday

March 29, 2015

March 29, 2015

Posted by **Anonymous** on Wednesday, October 3, 2007 at 9:37pm.

Qaulity control plan A calls for rejecting a battery as defective if its weight falls more than 2 standard deviations below the specified mean.

Qaulity control plan B calls for rejecting a battery as defective if its weight falls more than 1.5 interquartile ranges below the lower quartile of the specified population.

a) What proportions of batteries will be rejected by plan A?

I got .025.

b) What is the probability that at least 1 of 2 randomly chosen batteries will be rejected by plan A?

I am completely drawing blank on this one.

c) What proportions of batteries will be rejected by plan B?

I don't know how to do this one either.

- math -
**my**, Wednesday, October 3, 2007 at 10:06pm9-1

- Statistics -
**Barry**, Sunday, March 15, 2009 at 9:38pma) .0225

b) =1-P(x=0)=.0445

c) I do not know.

- statistics -
**meow**, Tuesday, January 10, 2012 at 11:34amc. Q3-Q1=IQR

-.67-.67=1.34

Z=Q1-1.5IQR

Z=.67-1.5(1.34)

Z=-2.68

P(Z>-2.68)=.0037

**Answer this Question**

**Related Questions**

statistics - The numbers of hours of life of a torch battery is normally ...

Math - An apothecary has a set of five weights for use in the pans of his ...

Statistics - . A certain company makes 12-volt car batteries. After many years ...

math - A fitness company surveyed the weights of its 90 costumers. Assume that ...

math - A fitness company surveyed the weights of its 90 costumers. Assume that ...

Statistics - A battery manufacturer is positive that its AA batteries last for 1...

mgt 420 - Individual Assignment: Prepare a 350- to 700-word paper in which you ...

Statistics - A certain company makes 12-volt car batteries. After many years of ...

Statistics - The weights of adult males are normally distributed with a mean of ...

statistic - The variance in a production process is an important measure of the ...