Statistics Problem involving \"Power\" Submission 2 (0/5 points) Saturday, March

Question

Statistics Problem involving "Power"

Submission 2 (0/5 points) Saturday, March 24 2018 02:35 PM MDT Suppose you are planning to conduct a two-tailed independent samples (a.k.a two-sample) t-test to determine if the means of two groups are significantly different at a significance level of = 0.05. You would like to determine how large a sample you'll need to collect in order to achieve a desired power. What do we mean by "power"? (There are two correct answers; you have five attempts for this question) The probability of rejecting Ho, if Ho is true The probability of failing to reject Ho, if Ho is true. The probability of rejecting Ho, if Ho is false. The probability of *not committing a Type II error The probability of failing to reject Ho, if Ho is false. The probability of committing a Type II error The probability of committing a Type I error The probability of *not* committing a Type I error

Explanation / Answer

Power of the test is best defined as:

Probability of rejecting H0 if H0 is false.

Probability of not committing a type II error.

Answer: Options 3 and 4

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