Hi I have this question.

If of tyres of failed to last miles, while the corresponding gures for tires of , , and were , and ,test the null hypothesisthat there is no dierence in the quality of the four kinds of tyres.

Use .

Thank-you so much!

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- October 25th 2010, 11:35 PMlpdHypothesis Testing
Hi I have this question.

If of tyres of failed to last miles, while the corresponding gures for tires of , , and were , and ,**test the null hypothesis**that there is no dierence in the quality of the four kinds of tyres.

Use .

Thank-you so much! - October 26th 2010, 02:35 AMCaptainBlack
- October 26th 2010, 03:21 AMlpd
What kind of test should I use for this particular distribution?

- October 26th 2010, 05:58 AMCaptainBlack
The number of failure in 200 trials with a given probability p has a binomial distribution B(200,p), which you can probably approximate in this case by a normal. You now need to find an interval such that the probability of none of four observations from this distribution are out side is 5%.

CB