Question

1. Jane Goodall is interested in knowing whether male chimps are more aggressive than female chimps. She counts the number of “aggressive acts” each chimp engages in for a week. She calculates the average number of aggressive acts across male and female chimps and compares those averages.

One-sample t-test

Paired sample t-test

Independent samples t-test

2. A marriage and family therapist is interested in knowing who is happier in their opposite sex relationship – the woman or the man. She takes a random sample of her clients and asks married women and men to individually complete a “marriage happiness” survey, which measures happiness on an interval-ratio scale. She compares scores of women to their husbands to see who is happier.

One Sample T-Test

Independent samples t-test

Paired sample t-test

3. You have an interval-ratio DV measured at two time points with the same sample.

One Sample T-Test

Paired sample t-test

Independent samples t-test

4. You have an interval dependent variable comparing means on a sample vs. a population.

One Sample T-Test

Paired sample t-test

Independent samples t-test

5. An NBA basketball player wants to see if his free-throw average if better than the population of the NBA, which is 75%. To do this, he randomly samples 10 of his games and tallies his average free throw percentage across those games and compares it to the NBA average of 75%.

Paired sample t-test

One Sample T-Test

Independent samples t-test

Answer 1

1.

Independent samples t-test

Explanation :The independent t-test, also called the two sample t-test, independent-samples t-test. The Independent Samples t Test can only compare the means for two (and only two) groups.

2

Independent samples t-test

Explanation :The independent t-test, also called the two sample t-test, independent-samples t-test or student's t-test, The Independent Samples t Test can only compare the means for two (and only two) groups.

3

Paired sample t-test

Explanation :The paired sample t-test is a statistical procedure used to determine whether the mean difference between two sets of observations is zero. In a paired sample t-test, each subject or entity is measured twice, resulting in pairs of observations.

4.

One Sample T-Test

Explanation :

The one-sample t-test is used to determine whether a sample comes from a population with a specific mean.

4.

One Sample T-Test

Explanation :

The one-sample t-test is used to determine whether a sample comes from a population with a specific mean. Here given population mean 75%.

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