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(Solved): need help. cant figure it out Consider the data below. Three random samples in different cities were ...
need help. cant figure it out
Consider the data below. Three random samples in different cities were selected. Water use per household per day were measured. Test the claim that the samples come from populations with the same mean. Assume all requirements have been met. Use a level of significance. 1. Find the P-value. 2. Will the null hypothesis be rejected? Sample Data
Expert Answer
Our hypotheses for testing -H0: The population means across the three cities are equal .Ha: At least two population means among the three are not equal .Here number of treatments (k)=3Total number of observations across three samples (N)=20For the given testing scenario we will be using F-test with df=(k-1,N-k)=(2,17)Information on sample from City 1 -Number of observations (n1)=6Sum of observations ( 370Sum of square of observations ( =23748Information on sample from City 2-n2=8 , =369 , =17579 Information on sample from City 3-n3=6 , =380 , =24878