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Test the claim about the difference between two population means 1 and 2 at the level of significance . Assume the samples are random andindependent,
Test the claim about the difference between two population means 1 and 2 at the level of significance . Assume the samples are random andindependent, and the populations are normally distributed.
Claim: 1=2; =0.05. Assume ^21=^22
Samplestatistics:
x1=30.3, s1=3.7, n1=10 and
x2=33.2, s2=2.3, n2=19
(a) Identify the null and alternative hypothesis
(b) Find the standardized test statistic t
(c) Find the P-value
(d) Decide whether to reject or fail to reject the null hypothesis and interpret the decision in the context of the original claim
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