A researcher selects a sample of n=25 individuals from a population with a mean of u=60...

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A researcher selects a sample of n=25 individuals from a population with a mean of u=60 and standard deviation of o=10 and administers a treatment. The researcher predicts that the treatment will increase scores. Following the treatment, the average score for this sample is M=65 1. Using symbols, State the hypothesis for a one-tailed test. 2. Calculate the z-score and place on a standardized normal distribution. 3. With a one-tail a= 0.05, state the conclusion of these findings. 4. Calculate Cohen's d and state the effect size (i.e., small, medium, large). A researcher selects a sample of n=25 individuals from a population with a mean of u=60 and standard deviation of o=10 and administers a treatment. The researcher predicts that the treatment will increase scores. Following the treatment, the average score for this sample is M=65 1. Using symbols, State the hypothesis for a one-tailed test. 2. Calculate the z-score and place on a standardized normal distribution. 3. With a one-tail a= 0.05, state the conclusion of these findings. 4. Calculate Cohen's d and state the effect size (i.e., small, medium, large).