Question

question 1
which of the situations shows a biased study?
observing the effect of gravity on the moons orbit
asking a persons favorite type of food outside of a grocery store.
observing the interaction of substance as they are being mixed together.
measuring the weight of objects at two different altitudes with different scales.
question 2
which of the following statements describes the difference between an observation study and an experiment?
in an observation study, a variable can be changed or manipulated in order to study the effect on another variable.
there is no difference between an observation study and an experiment.
an experiment includes taking a survey, while an observation study does not include taking a survey.
an observation study cannot support a cause - and - effect relationship and an experiment can support a cause - and - effect relationship.
question 3

Explanation:

Question 1:

People outside a grocery store may be more likely to have a preference for food - related items, introducing bias. The other options are more objective scientific observations or measurements.

Question 2:

In an observation study, researchers only observe and record data without manipulating variables, so it cannot establish cause - and - effect. In an experiment, variables are manipulated, allowing for cause - and - effect determination.

Answer:

Question 1: Asking a person's favorite type of food outside of a grocery store.

Question 2: An observation study cannot support a cause - and - effect relationship and an experiment can support a cause - and - effect relationship.