Summary statistics are given for independent simple random samples from two populations. Use the nonpooled t-test to conduct a left-tailed hypothesis test using a significance level of a = 0.05. x = 11.7, s, = 3.9, n, = 14, X2 = 13.9, s2 = 5.2, n2 = 17 O A. Test statistic: t= - 2.211 B. Test statistic: t= - 1.345 1.700 Do not reject Ho Critical value: - 2.046 Critical value: Reject Ho O C. Test statistic: t= - 2.211 Critical value: -1.700 Reject Ho O D. Test statistic; t= - 1.345 Critical value: - 2.046 Do not reject Ho

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