Consider the data below. Previous studies have shown that approximately 32% of women deliver prematurely without treatment. Is the proportion of women delivering prematurely significantly higher in the placebo group? Run the test at a 5% level of significance.Preterm DeliveryExperimental DrugStandard DrugPlaceboYes172335No837765

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Asked Dec 3, 2019
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Consider the data below. Previous studies have shown that approximately 32% of women deliver prematurely without treatment. Is the proportion of women delivering prematurely significantly higher in the placebo group? Run the test at a 5% level of significance.

Preterm Delivery Experimental Drug Standard Drug Placebo
Yes 17 23 35
No 83 77 65

 

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Expert Answer

Step 1

Here we are considering the placebo group

The sample proportion= P= 0.35

The sample size of placebo group is 100.

Step 2

Set up the null hypothesis:

Null hypothesis H0: p = 0.32

Alternative hypothesis H1: p > 0.32

Step 3

The test stat...

P - p
p(1-p)
subthe givenvalues
0.35 - 0.32
f0.32(0.68)
100
0.03
0.2176
V 100
0.03
Vo.002176
0.03
0.0466
:= 0.64
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P - p p(1-p) subthe givenvalues 0.35 - 0.32 f0.32(0.68) 100 0.03 0.2176 V 100 0.03 Vo.002176 0.03 0.0466 := 0.64

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Hypothesis Testing

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