Statistics Project Part 2

This project allows you to apply and expand some of the concepts and methods discussed in class to a real-life data set. The data set that I want you to analyze is about the effect that a smoking mother has on her infant. The data consists of the babys weight in grams, whether the infants mother smoked during her pregnancy, and if the baby was born pre-mature. Use this data set to perform the indicated tasks listed below and to answer the following questions. I recommend that you insert into this document your answers using a bold font so I can easily see your answers. Insert any graphs and Statcrunch output as well.

1. Calculate and interpret a 95% confidence interval for the mean difference in the weight of babies for mothers that smoke versus those that do not smoke. Insert the Statcrunch output here.

2. Calculate and interpret a 90% confidence interval for the percentage of premature babies with smoking mothers versus those that do not smoke. Insert the Statcrunch output here.

3. For each hypothesis test below, do the following:

· State Ho and Ha

· Use the 0.05 level of significance for all tests

· Calculate the test statistic and p-value using Statcrunch. Insert the Statcrunch output.

· Make a decision to reject or not reject Ho and write a conclusion.

a. Test the claim that the average weight for babies with smoking mothers is less than that of non-smoking mothers.

b. Test the claim that there is no difference in the percentage of premature babies with smoking mothers compared to that of non-smoking mothers.

4. Write up a brief conclusion about your findings based on this project. Did anything surprise you about your results? Explain.

Due Date: Part 2 of this project is due Tuesday July 21st by 11:59 pm! There are NO exceptions to this! Your project will be graded on thoroughness and accuracy. Simply send me an e-mail with your project attached by the due date.
To access the data set, go to MyStatLab, click on Course Tools, then click on Document Sharing. Find the document titled, Project data Summer 2022. It is an Excel document that you can cut and paste into Statcrunch to analyze.

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