Hypothesis Testing

(a) A researcher uses Excel to analyse data and test a hypothesis. The program reports a test

statistic of z = 1.77 (P-value = 0.077). Would you reject the null hypothesis if carrying

out (i) a one-tailed test (ii) a two-tailed test? Use the 5% significance level.

(b) Repeat part (a) using a 1% significance level.

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