The following research articles appeared on FiveThirtyEight.com. Identify the va

Question

The following research articles appeared on FiveThirtyEight.com. Identify the variable situation used in each of the scenarios. A marriage counselor wants to compare the average length of a long distance relationship with the average length of a relationship where both partners live in the same city. A defense attorney wants to learn if there is a relationship between the population and incarceration rate per 100,000 people in major United States cities. A researcher wants to determine the proportion of eligible Americans who have served on a jury at some point in their lifetimes. A child psychologist wants to compare the proportion of boys under the age of 12 who can ride a bicycle with the proportion of girls under the age of 12 who can ride a bicycle. A political scientist wants to determine the average amount of money that an individual donor donates to Hillary Clinton's campaign.

Explanation / Answer

Solution(a):

In this situation both samples are different(Long distance relationship length and Short distance relationship length) So we will use Seperate Variance t test to compare these two variables.

Solution(b):

Again we have one sample and we want to compare on different situations so we will use paired t -test.

Solution(c):

Here Dependent variable is Population of Eligible Americans

Independent Variables is Who have served on a jey at the some point in their lifetimes.

Solution(d):

Here we have two populations for boys and Girls. So We will use paired t-test for two proportions.

Solution(e):

Here Dependent Variable is Average amount of money In the campaign

Independet variable is individual donor donates money to hillary clinton's campaigns.

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