5. The Pew Research report found that teens spend about 9 hours per day online (e.g., social media, texting, surfing Int

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5 The Pew Research Report Found That Teens Spend About 9 Hours Per Day Online E G Social Media Texting Surfing Int 1 (71.91 KiB) Viewed 102 times

5. The Pew Research report found that teens spend about 9 hours per day online (e.g., social media, texting, surfing Internet). A high-school principal wanted to know if students in her students spend as much time online per day as reported by the Pew Research. She polled a random sample of 20 adolescents and found the sample mean to be 10.3 hours with the sample standard error of the mean to be 0.5 hours. a) State the hypotheses b) Test the hypotheses at a=.05 c) Construct a 95% confident interval a d) Conclusion e) What is the effect size, d? According to Cohen's d, what is the magnitude of this effect size?