Question content area top Part 1 Most pregnancies are full term, but some are preterm (less than 37 weeks). Of those that are preterm, they are classified as early (less than 34 weeks) and late (34 to 36 weeks). A report examined those outcomes for one year, broken down by age of the mother. Is there evidence that the outcomes are not independent of age group? Early Preterm Late Preterm Under 20 129 276 20 to 29 246 594 30 to 39 168
Question content area top Part 1 Most pregnancies are full term, but some are preterm (less than 37 weeks). Of those that are preterm, they are classified as early (less than 34 weeks) and late (34 to 36 weeks). A report examined those outcomes for one year, broken down by age of the mother. Is there evidence that the outcomes are not independent of age group? Early Preterm Late Preterm Under 20 129 276 20 to 29 246 594 30 to 39 168
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
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Question content area top
Part 1
|
Most pregnancies are full term, but some are preterm (less than 37 weeks). Of those that are preterm, they are classified as early (less than 34 weeks) and late (34 to 36 weeks). A report examined those outcomes for one year, broken down by age of the mother. Is there evidence that the outcomes are not independent of age group?
|
|
Early Preterm
|
Late Preterm
|
|
|---|---|---|---|---|
|
Under 20
|
129
|
|
276
|
|
|
20 to 29
|
246
|
|
594
|
|
|
30 to 39
|
168
|
|
427
|
|
|
40 or Over
|
15
|
|
45
|
|
Question content area bottom
Part 1
Choose the correct null and alternative hypotheses below.
H0:
The proportions of early/late preterm births are the same for all age groups.HA:
The proportions of early/late preterm births are not the same for all age groups.H0:
Age group and outcome are not independent.HA:
Age group and outcome are independent.H0:
The proportions of early/late preterm births are not the same for all age groups.HA:
The proportions of early/late preterm births are the same for all age groups.H0:
Age group and outcome are independent.HA:
Age group and outcome are not independent.Part 2
Compute the
χ2
statistic.χ2=enter your response here
(Round to three decimal places as needed.)Part 3
Find the P-value.
P-value=enter your response here
(Round to three decimal places as needed.)Part 4
State the conclusion. Choose the correct answer below.
The P-value is greater than or equal to the level of significance,
α=0.01.
There is insufficient evidence to reject
H0
and conclude that age group and outcome are not independent.The P-value is less than the level of significance,
α=0.01.
There is sufficient evidence to reject
H0
and conclude that age group and outcome are independent.The P-value is less than the level of significance,
α=0.01.
There is insufficient evidence to reject
H0
and conclude the proportions of early/late preterm births are not the same for all age groups.The P-value is greater than or equal to the level of significance,
α=0.01.
There is sufficient evidence to reject
H0
and conclude the proportions of early/late preterm births are not the same for all age groups.Expert Solution
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