A Researcher Conducts 20 Tests of Statistical Significance,one for Each

question 20

Multiple Choice

A researcher conducts 20 tests of statistical significance,one for each independent variable,wita.05 significance level.Only one test yields a probability value that is not greater than .05.What can we infer about the latter test?

• A) The probability of committing a Type I error in rejecting the null hypothesis is .05.
• B) It is a statistically significant predictor of the dependent variable.
• C) Because so many tests were conducted, the probability of committing a Type I error is greater than .05.
• D) Because so many tests were conducted, the probability of committing a Type I error is much smaller than .001.

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