Which of the following research studies is least likely to

Last updated: 4/24/2023

Which of the following research studies is least likely to contain a confounding factor variable that provides an alternative explanation for results in its design Researchers randomly assign participants to experimental and control groups Females make up 35 of the experimental group and 75 of the control group To explore trends in the spiritual religious beliefs of students attending U S universities researchers survey a random selection of 500 freshmen at a small private university in the South O To evaluate the effect of a new diet program researchers compare weight loss between participants randomly assigned to treatment diet and control no diet groups while controlling for average daily exercise and pre diet weight Researchers tested the effectiveness of a new tree fertilizer on 10 000 saplings Saplings in the control group no fertilizer were tested in the fall whereas the treatment group fertilizer were tested the following spring