Suppose a researcher tests H0 : µ = 125 versus Ha : µ ̸= 125 at the α = 0.05 significance level. If σ = 12 and a 96.6% confidence interval for µ is (118.26,126.74), find the p−value of the test.
Added by Evan R.
Step 1
Since the significance level (α) is 0.05 for a two-tailed test, we need to find the critical z-values that correspond to the tails of the distribution. The critical z-values for α = 0.05 in a two-tailed test are approximately ±1.96. Show more…
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