Hypothesis Testing:

(ii) P-value = 2P(Z>4.844)=2(0)=0. Since the P-value ( (=0.05, reject H0. Conclude that it is different for two groups of residents. Population characteristics: Ratio of the two population variances, or standard deviations, . X and Y's are random sample from a normal distribution. and are the population variances for X's and Y's, respectively. ................
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