Identify the design of each experiment below as paired samples or independent sa
ID: 3152926 • Letter: I
Question
Identify the design of each experiment below as paired samples or independent samples.
a. The proportion of leaves fallen were compared between 11 willow oak trees and 11 water oak trees in October.
b. Thirty-one bulls were compared to 31 bears for signs of depression on October 30, 1929.
c. Ten brand-new, identical Toyotas were obtained for a gas mileage comparison. Five covered the course using regular gas and the other five used a 10% alcohol mixture (gasohol). Miles per gallon were compared between the two types of fuel used.
d. Germination rates from 10 packages of sugar peas from Burpees were compared to 10 packages from Starks.
Explanation / Answer
a) Independent samples (two different varieties of Oak trees)
b) Independnet samples (31 bulls versus 31 bears)
c) Independent samples (5 Toyota cars were given a separate treatment and another 5 were given separate treatment)
d) Independnet samples ( 10 packages of sugar peas from Burpees versus 10 packasges from Starks)