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.35 5% versus 1%. Sketch the standard Normal curve for the z test statistic and mark off areas under the curve to show why
.35 5% versus 1%. Sketch the standard Normal curve for the z test statistic and mark off areas under the curve to show why a value of z that is statistically significant at the 1% level in a one-sided test is always statistically significant at the 5% level. If z is statistically significant at the 5% level, what can you say about its significance at the 1% level?
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