A researcher is interested in studying whether smoking during pregnancy affects

Question

A researcher is interested in studying whether smoking during pregnancy affects babies birth weights. Mothers were categorized as cither smoking or non-smoking and their babies' birth weights were measured within one minute of their births, Which statistical procedure would one apply to determine whether there was a significant difference in the birth weights of chilldren born to smoking mothers versus non-smoking mothers? ANOVA Repeated Measures t-test Chi-Square Goodness of Fit O Regression O t-test for Independent Means Chi-Square Test for Independence Pearson Correlation O Single Sample t-test Question 4 1 pts A researcher is interested in examining the relationship between marital status (married widowed, divorced, separated, or never married) and the number of times a person had sex in the last year. What statistical technique will test whether there is a difference among the marital status groups in the amount of sex they have? O ANOVA Repeated Measures t-test OChi-Square Goodness of Fit Regression O t-test for Independent Means Chi-square Test for Independence Pearson Correlation O Single Sample t-test

Explanation / Answer

Q3. The statistical test that can be used to find a relationship between the differences in birth weight to smoking mothers vs. nonsmoking mothers;

Pearson correlation   (As if the correlation coefficient is far enough away from zero it will be statistically significant.

Q4. For finding a relationship between the marital status and the number of times a person has sex we should use;

Pearson correlation (As if the correlation coefficient is far enough away from zero it will be statistically significant.

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