Glo-lite light bulbs are advertised as having an average life of 600 hours with a standard deviation of 20. Consumer's Advocates (CA) has received numerous complaints that the bulbs burn out much more quickly. In order to check on the validity of these complaints, CA tests a sample of 25 bulbs and obtains:

(a)Set up

and

(b)Perform the statistical test (

(c)Draw final conclusions.?(d)?Now repeat using

Question

Glo-lite light bulbs are advertised as having an average life of 600 hours with a standard deviation of 20. Consumer's Advocates (CA) has received numerous complaints that the bulbs burn out much more quickly. In order to check on the validity of these complaints, CA tests a sample of 25 bulbs and obtains:

(a)Set up

and

(b)Perform the statistical test (

(c)Draw final conclusions.?(d)?Now repeat using

Quizplus · Accepted Answer

The Answer of Glo-lite light bulbs are advertised as having an average life of 600 hours with a standard deviation of 20. Consumer's Advocates (CA) has received numerous complaints that the bulbs burn out much more quickly. In order to check on the validity of these complaints, CA tests a sample of 25 bulbs and obtains: (a)Set up and (b)Perform the statistical test ( (c)Draw final conclusions.?(d)?Now repeat using

Glo-Lite Light Bulbs Are Advertised as Having an Average Life