no
Confounding variable.
Randomly choosing participants for the control group is effective. The reason for this is you could observe reactions of different participants in the control group.
The researcher cannot control what participants repeat about others outside the group.
The group being surveyed is called "participants" or "respondents."
A composite rate is a pricing method used in insurance and finance that calculates a single premium or rate for a group of individuals or items, rather than assessing each one individually. This approach simplifies the pricing process by averaging the risk across the entire group, taking into account various factors such as age, health, or risk factors. Composite rates are commonly used in group insurance policies, where the overall risk is pooled, leading to potentially lower costs for participants.
experimental group
Double blind.
yes
This type of experiment is called a single-blind experiment. In a single-blind design, participants are unaware of whether they are receiving the treatment or are part of the control group, which helps to reduce bias in their responses or behaviors. However, the experimenters are aware of the participants' group assignments, which allows them to manage the administration of the treatment and gather data effectively. This setup helps maintain objectivity while minimizing the influence of participants' expectations on the results.
placebo
Control group....<----Incorrect...its Experimental Group
a gaggle