Determine which statistical method(s) is/are appropriate to answer the question(

Question

Determine which statistical method(s) is/are appropriate to answer the question(s). You do not need to perform any actual analyses. Just state the method(s) that will best answer the questions. Give a one sentence explanation for your choice in each case. (You may assume all necessary assumptions are met, such as normality, common variance, etc., when they apply.) Your choices are:

Hypothesis tests and/ or confidence intervals

for a single population proportion                            to compare two population means using independent samples

for a single population mean                                      to compare two population proportions

for a single population variance                                 to compare two population means using paired data

to determine independence/dependence of rows and columns in a table

Checking for the existence of a linear relationship with a scatter plot and correlation

Q)In a recent poll, 1003 randomly selected adults in the United States were asked whether or not they have a gun in their home. 37.2% of them said that they do. Suppose you want to estimate the percentage of all adults in the US who keep a gun at home. What method would you use?

Explanation / Answer

Q)In a recent poll, 1003 randomly selected adults in the United States were asked whether or not they have a gun in their home. 37.2% of them said that they do. Suppose you want to estimate the percentage of all adults in the US who keep a gun at home. What method would you use?

Hypothesis tests and/ or confidence intervals

for a single population proportion

because you have a proportion of the sample and you want to know if the % of adults in the US who keep a gun at home

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