In a May 2011 study, Federal University Hospital in São Paulo, Brazil, 71 healthy pregnant women were separated into a control group and an experimental group. Those in the experimental group engaged in aerobic water exercise throughout their pregnancy whereas those women in the control group did not. After giving birth the neonatal outcome of the children of all women in the study was recorded where a negative neonatal outcome was defined as a hospital stay of more than four days. A set of similar results is shown in the table Group Positive Neonatal Outcome Negative Neonatal Outcome Water Exercise 19 17 Control Group 11 19 At a 5% level of significance, test the claim that the neonatal outcome was unrelated to the group in which they were assigned (Water exercise or control group). State the null and alternative hypothesis and identify the claim from the options below 1. H0: Neonatal outcome and group assignment are independent. HA: Neonatal outcome and group assignment are dependent. 2. H0: Neonatal outcome and group assignment are not linearly related. HA: Neonatal outcome and group assignment are linearly related. 3. H0: Neonatal outcome and group assignment are dependent. HA: Neonatal outcome and group assignment are independent. 4. H0: Neonatal outcome and group assignment are linearly related. HA: Neonatal outcome and group assignment are not linearly related.
In a May 2011 study, Federal University Hospital in São Paulo, Brazil, 71 healthy pregnant women were separated into a control group and an experimental group. Those in the experimental group engaged in aerobic water exercise throughout their pregnancy whereas those women in the control group did not. After giving birth the neonatal outcome of the children of all women in the study was recorded where a negative neonatal outcome was defined as a hospital stay of more than four days.
A set of similar results is shown in the table
|
Group |
Positive Neonatal Outcome |
Negative Neonatal Outcome |
|
Water Exercise |
19 |
17 |
|
Control Group |
11 |
19 |
At a 5% level of significance, test the claim that the neonatal outcome was unrelated to the group in which they were assigned (Water exercise or control group).
State the null and alternative hypothesis and identify the claim from the options below
1.
|
H0: Neonatal outcome and group assignment are independent. HA: Neonatal outcome and group assignment are dependent. |
2.
H0: Neonatal outcome and group assignment are not linearly related.
HA: Neonatal outcome and group assignment are linearly related.
3.
H0: Neonatal outcome and group assignment are dependent.
HA: Neonatal outcome and group assignment are independent.
4.
H0: Neonatal outcome and group assignment are linearly related.
HA: Neonatal outcome and group assignment are not linearly related.
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