Which of the following statements is true about the scientific process?

If you follow the steps, you will always support the hypothesis.
You can change the hypothesis if the experiment is not supporting it.
If your hypothesis is not testable, you can't do an experiment.
You can change the data if it doesn't support the hypothesis.
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Why are astrologers not considered to be scientists?

Astrologers do not use tools.
Astrologers do not observe the universe.
Astrologers do not use the scientific method.
Astrologers do not go to college.