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Question:
a. Identify the null and research hypotheses for a two-sided test, using both words and mathematical symbols.
b. Perform a two-sided test at the 5% significance level and describe the result.
c. Perform a two-sided test at the 1% significance level and describe the result.
d. State the p-value as either p > 0.05, p < 0.05, p < 0.01, or p < 0.001.
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