Dataset:

All questions can be answered using the birthweight.sav dataset provided

The data on 189 births were collected at Baystate Medical Center, Springfield, Mass. during 1986. The dataset contains an indicator of low infant birth weight as a response and several risk factors associated with low birth weight. The actual birth weight is also included in the dataset.

Use the data and SPSS to answer the following:

1.Determine if average birth weights (continuous) differ based on the mother's smoking status (Y/N).

a)What statistical test should you use? (1 pts)

b)Create the visual display that is appropriate to show this relationship?(1 pt)

c)What is the null and alternative hypothesis? (1 pts)

d)What is the value of the test statistic and corresponding p-value? (1 pts)

e)Would you retain or reject the null hypothesis based on the p-value? Why? (1 pt)

f)Interpret your conclusion in terms of smoking status and birth weight. (1 pt)

2.Determine if the mother's pre-pregnancy weight can be used to predict their child's birth weight (continuous).

a)What statistical test should you use? (1 pt)

b) Make a scatterplot of the data with mother's weight on the x-axis and birth weight on the y-axis.Describe the plot in terms of form, strength, and direction. (2 pts)

c)Write the equation of the estimated line in the form bwt = a +b (mother's weight). (1 pt)

d)Find the predicted birth weight when the mother's weight is 165 lbs. (1 pt)

e)If you wanted to test whether the mother's weight was linearly related birth weight, what hypothesis would you test? (1 pt)

f)What is the t-value and p-value for this hypothesis test? (1 pt)

g)Would you retain or reject the null hypothesis? Why? (1 pt)

h)Interpret your conclusion in terms of the mother's weight and birth weight. (1 pt)

3.Determine if mean birth weights (continuous) are significantly different among the various racial groups (Black, White, Other)

a)What test should you use? (1 pts)

b)Create side by side box plots showing the distribution of birthweight by race. (1 pt)

c)What are the null and alternative hypotheses for this F-test? (1 pt)

d)What is the value of the F statistic and corresponding p-value? (1 pt)

e)Would you retain or reject the null hypothesis?Why? (1 pt)

f)Interpret your results. (1 pt)

4.Determine if there is a relationship between low birth weight (Y/N) and smoking status (Y/N).

a)What test should you use? (1 pt)

b)What are the null and alternative hypotheses for this test? (1 pt)

c)What is the value of the statistic and corresponding p-value? (1 pt)

d)Would you retain or reject the null hypothesis?Why?(1 pt)

e)Interpret your results. (1 pt)