Discrete Components, Inc., manufactures a line of electrical resistors. Presentl

Question

Discrete Components, Inc., manufactures a line of electrical resistors. Presently, the carbon composition line is producing 100 ohm resistors. The population variance of these resistors "must not exceed 4" to conform to industry standards. Periodically, the quality control inspectors check for conformity by randomly selecting 10 resistors from the line and calculating the sample variance. The last sample had a variance of 4.36. If the critical value of chi-square is 16.919 and the observed value is 15.247, the appropriate decision is to- reduce the sample size increase the sample size Oreject the null hypothesis fail to reject the null hypothesis do nothing

Explanation / Answer

1)here as observed value is less then crtiical value for a right tail test: appropriate decision is to

fail to reject the null hypothesis

2)

reject the null hypothesis.

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