Question

Jason wanted to know if teenagers were more scared at night at a theme park or at a summer camp. So Jason asked 100 people, 50 from a theme park and 50 from summer camp at night how scared they were.  What statistical test should Jason use to analyze his data?

		one-sample z-test (single-sample z-test)
		one-sample t-test (single-sample t-test)
		independent-measures t-test
		repeated-measures t-test (paired-samples t-test)
		independent-measures ANOVA

Answer 1

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A paired/ repeated test happens on the same sample, so "repeated-measures t-test"  is ruled out.

Here an independent 2-sample test is required. so 1st and 2nd options ( one-sample z / t tests are ruled out.

The independent t-test, also called the two sample t-test, independent-samples t-test or student's t-test, is an inferential statistical test that determines whether there is a statistically significant difference between the means in two unrelated groups. This is suitable for what we want to do. So, Independent -measures t-test looks good.

Independent -measures ANOVA is still a sample test, we want to check differences in means of 2 samples, so last option is ruled out.

3rd option is correct. : independent-measures t-test