If the null hypothesis states that m = 70 and a researcher obtains a sample with M = 73 and s² = 9,then Cohen's d = 0.33.

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Cohen's d is calculated as the difference between the sample mean and the population mean divided by the standard deviation. In this case, Cohen's d = (73 - 70) / 9 = 0.33. However, the notation for the standard deviation seems to be incorrect or unclear (s² = 9), which might lead to confusion about the calculation. The correct calculation with a clear standard deviation would affirm the value, but the provided notation does not directly support the calculation process.

If the Null Hypothesis States That M = 70 and a Researcher