Smaller of U1 and U2- A small study (n-10) is designed to assess if there is an association between smoking in pregnancy and low birth weight. Low birth weight babies are those born less than 5.5 pounds. The following data represent the birth weights, in pounds, of babies born to mothers who reported smoking in pregnancy and those who did not. 1. Based on comparing the Smaller of Ui and U2 to the Critical value which of the following is (are) true? Mother smoked in pregnancy Mother did not smoke during pregnancy 5.1 A. There is significant evidence at alpha -0.05 to show that the populations of birth 5.0 4.2 4.8 3.3 3.9 5.3 5.4 weights in mothers who smoked in pregnancy and those who did not are not equal. 4.9 4.6 Is there a significant difference in birth weights between mother who smoked during pregnancy and those who did not? Apply the Mann Whitney U Test at a 5% level of significance B. There is not significant evidence at alpha-0.05 to show that the populations of birth weights in mothers who smoked in pregnancy and those who did not are not equal. C. There are not enough data points to reach a conclusion. D. The tied value makes the analysis suspect Complete the table below. Total Sample (Ordered Smallest to Largest Ranks Mother Smoked Did Nota Pregnancy Smoke in n MotherRSmoked Did Not SmokedDid Not Smoke Smoke Pregnanc 5.0 4.2 4.8 3.3 3.9 4.9 5.4 4.6 4 4.6 10 2. cont. Alpha Critical value U-

Question
Smaller of U1 and U2-
A small study (n-10) is designed to assess if there is an association between smoking
in pregnancy and low birth weight. Low birth weight babies are those born less than
5.5 pounds. The following data represent the birth weights, in pounds, of babies born
to mothers who reported smoking in pregnancy and those who did not.
1.
Based on comparing the Smaller of Ui and U2 to the Critical value which of the
following is (are) true?
Mother smoked in pregnancy
Mother did not smoke during pregnancy 5.1
A. There is significant evidence at alpha -0.05 to show that the populations of birth
5.0 4.2 4.8 3.3 3.9
5.3
5.4
weights in mothers who smoked in pregnancy and those who did not are not
equal.
4.9
4.6
Is there a significant difference in birth weights between mother who smoked during
pregnancy and those who did not? Apply the Mann Whitney U Test at a 5% level of
significance
B. There is not significant evidence at alpha-0.05 to show that the populations of
birth weights in mothers who smoked in pregnancy and those who did not are
not equal.
C. There are not enough data points to reach a conclusion.
D. The tied value makes the analysis suspect
Complete the table below.
Total Sample (Ordered
Smallest to Largest
Ranks
Mother
Smoked Did Nota
Pregnancy Smoke in n
MotherRSmoked Did Not SmokedDid Not
Smoke
Smoke
Pregnanc
5.0
4.2
4.8
3.3
3.9
4.9
5.4
4.6
4
4.6
10
2. cont.
Alpha
Critical value U-

Image Transcription

Smaller of U1 and U2- A small study (n-10) is designed to assess if there is an association between smoking in pregnancy and low birth weight. Low birth weight babies are those born less than 5.5 pounds. The following data represent the birth weights, in pounds, of babies born to mothers who reported smoking in pregnancy and those who did not. 1. Based on comparing the Smaller of Ui and U2 to the Critical value which of the following is (are) true? Mother smoked in pregnancy Mother did not smoke during pregnancy 5.1 A. There is significant evidence at alpha -0.05 to show that the populations of birth 5.0 4.2 4.8 3.3 3.9 5.3 5.4 weights in mothers who smoked in pregnancy and those who did not are not equal. 4.9 4.6 Is there a significant difference in birth weights between mother who smoked during pregnancy and those who did not? Apply the Mann Whitney U Test at a 5% level of significance B. There is not significant evidence at alpha-0.05 to show that the populations of birth weights in mothers who smoked in pregnancy and those who did not are not equal. C. There are not enough data points to reach a conclusion. D. The tied value makes the analysis suspect Complete the table below. Total Sample (Ordered Smallest to Largest Ranks Mother Smoked Did Nota Pregnancy Smoke in n MotherRSmoked Did Not SmokedDid Not Smoke Smoke Pregnanc 5.0 4.2 4.8 3.3 3.9 4.9 5.4 4.6 4 4.6 10 2. cont. Alpha Critical value U-

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