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Unformatted text preview: niﬁcance level Hypothesis Testing for Population Proportions Hypothesis Testing for Population Proportions Steps in Conducting a Hypothesis Test
Hypothesis Test for a Single Population Proportion
Hypothesis Test for Diﬀerence in Two Population Proportions Step 3  Compute
Compute the Test
statistics: zobserved = ˆ
(ˆ1 − p2 ) − 0
p
SE where
n1 = sample size in sample 1
n2 = sample size in sample 2
SE = ˆ
ˆ
p (1 − p ) 1
1
+
n1 n2 The pooled sample
proportion: ˆ
p= number of successes in both sam
n1 + n2 ˆ
p1 = X1
X2
ˆ
and p2 =
n1
n2 Compute the p −value.
Reject H0 if p −value < α .
Hypothesis Testing for Population Proportions Hypothesis Testing for Population Proportions Steps in Conducting a Hypothesis Test
Hypothesis Test for a Single Population Proportion
Hypothesis Test for Diﬀerence in Two Population Proportions Step 4  Interpret the Results State the conclusions in the context of the study. Hypothesis Testing for Population Proportions Hypothesis Testing for Population Proportions Steps in Conducting a Hypothesis Test
Hypothesis Test for a Single Population Proportion
Hypothesis Test for Diﬀerence in Two Population Proportions Example Does caﬀeine therapy lower the rate of bad events? Of the
937 infants given the therapy, 377 suﬀered from death or
disability. The placebo group hadHypothesis Testing for and of these,
932 infants, Population Proportions Hypothesis Testing for Population Proportions Steps in Conducting a Hypothesis Test
Hypothesis Test for a Single Population Proportion
Hypothesis Test for Diﬀerence in Two...
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This test prep was uploaded on 03/12/2014 for the course STATS 10 taught by Professor Ioudina during the Spring '08 term at UCLA.
 Spring '08
 Ioudina

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