1 answer

Question 12 (2 points) A fuel oil company claims that 20.0% of the homes in a...

Question:

Question 12 (2 points) A fuel oil company claims that 20.0% of the homes in a town of 5000 is heated by oil. Do we have reaso
Question 12 (2 points) A fuel oil company claims that 20.0% of the homes in a town of 5000 is heated by oil. Do we have reason to doubt this claim if, in a random sample of 1000 homes in this city, it is found that 221 are heated by oil? Use a 5% level of significance. c) CONCLUSION: SINCE THE TEST STATISTIC FALLS IN THE REJECTION REGION THEREFORE THERE IS ENOUGH STATISTICAL EVIDENCE TO SUPPORT THE RESEARCHER'S CLAIM AND THEREFORE HO REJECTED AND HA ACCEPTED. True False

Answers

Population proportion = Po = 0.2 Sample size=n= 1000 Sample number of events = x = 221 Sample proportion= p== 0.221 Level of

The test statistic is, P-PO Z =- = 1.66 P. (1-P) Conclusion: By Decision region, we fail to reject HO.

Ans : FALSE

.

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