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12:57 A psyclearn.apa.org 2. A researcher is measuring activity level in a sample of adults following a seminar on health and fitness. She would like to compare the average activity level of her sample, measured in minutes per week, to that of the recommended average activity level for adults in the United States to discuss the size of the difference. Which of the following would provide that information? a. Standard error of the mean b. One-sample t-test c. Confidence interval d. Effect size 3. Confidence intervals provide a. the precise range Tech support Tor the population

12:57 psyclearn.apa.org сагетипу, апта зеіесс спе best answer. Please answer the following questions: 1. After a 4-week training course, a sample of n=36 high school students correctly completed an average of 17 algebra problems in 10 minutes, with a standard deviation of 3 . The average number of problems correctly completed for the population of high school students was 9. Calculate Cohen's d as a measure of effect size. Report your answer rounded to the nearest two decimal places. 2. A researcher is measuring activity level in a sample of adults following a seminar on health and fitness. She would like to compare the average activity level of her sample, mensweg in minutes Tech support