Question: suppose the transport committee of Dar es salaam City want to test the hypothesis dirty a particular international school bus averages 20km

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Question: suppose the transport committee of Dar es salaam City want to test the hypothesis dirty a particular international school bus averages 20km per gallon of diesel/petrol. Assume that we test sample of 10 buses and obtain a mean of 21.2 km and a population variance of 3 kilometre

I) State the hypothesis set
ii) Can we reject the null hypothesis at a= 0.5 significance level?
iii) Do you reject the null hypothesis at a= 0.01 significance level?