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A researcher concluded that there were no differences in self-confidence between people who had received an intervention and people in a control group. However, there
A researcher concluded that there were no differences in self-confidence between people who had received an intervention and people in a control group. However, there were differences. The researcher's intervention worked! The researcher's conclusion represents which type of error? Group of answer choices A Type I error A Type II error Both a Type I and a Type II error Neither a Type I nor a Type II error
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