In a study of pregnant women, researchers collected extensive information on exercise levels of low-risk pregnant working women. A group of 217 women did no voluntary or mandatory exercise during the pregnancy while a group of 238 women exercised extensively. Researchers also recorded the occurrence of pre-term labor for each woman. The data is summarized in the table below - each cell of the table contains the observed count, expected count, and chi-square contribution:

Experienced pre-term labor?YesNoExtensive

Exercising

15223224.40.14410.0087No

Exercising

1120612.4204.60.15810.0096

• One wouldexpectwomen who exercise extensively to experience pre-term labor (round your answer to 4 decimal places). This value is
• less than what was observed in the sample for this group of women.
• more than what was observed in the sample for this group of women.
• Using the data above, determine if there is a significant relationship between exercising and the occurrence of pre-term labor. Use a significance level of 0.05.
• Select the appropriate hypotheses.
• H
• o
• Ho
• : exercising and the occurrence of pre-term labor are not related
• H
• a
• Ha
• : exercising and the occurrence of pre-term labor are related
• H
• o
• Ho
• : exercising and the occurrence of pre-term labor are related
• H
• a
• Ha
• : exercising and the occurrence of pre-term labor are not related
• Select the appropriate decision rule.
• RejectH
• o
• Ho
• if probability > 0.05
• RejectH
• o
• Ho
• if probability < 0.05
• RejectH
• o
• Ho
• if probability
• 0.05
• Using the information given in the table above, calculate the test statistic (round your answer to 4 decimal places).
• 2
• 2
• =
• The probability associated with the test statistics is 0.8519. Based on this, one would come to the following decision
• RejectH
• o
• Ho
• Fail to rejectH
• o
• Ho
• The conclusion for the test would be the following:
• At the 0.05 level, there is significant evidence to conclude exercising and the occurrence of pre-term labor are related.
• At the 0.05 level, there is not significant evidence to conclude exercising and the occurrence of pre-term labor are related.
• At the 0.05 level, there is not significant evidence to conclude exercising and the occurrence of pre-term labor are not related.
• At the 0.05 level, there is significant evidence to conclude exercising and the occurrence of pre-term labor are not related.