Recent results suggest that children with ADHD tend to watch more TV than children who are not diagnosed with the disorder. To examine this relationship, a researcher obtains a random sample of n = 36 children, 8 to 12 years old, who have been diagnosed with ADHD. Each child is asked to keep a journal recording how much time each day is spent watching TV. The average daily time for the sample is M = 4.9 hours. It is known that the average time for the general population of 8 to 12-year-old children is μ = 4.1 hours with σ = 1.8. Are the data sufficient to conclude that children with ADHD watch significantly more TV than children without the disorder? Use a two-tailed test with = .05. Which of the below options is the best answer? Answer A or B in the box Option A. The children with ADHD are significantly different.Option B. The children with ADHD are notsignificantly different. If the researcher had used a sample of n = 9 children and obtained the same sample mean, would the results be sufficient to reject H0? Select your answer from the below options. Answer A or B in the box Option A. Reject H0Option B. Fail to reject H0 Compute Cohen's d for this study. (Notice that the value you obtain does not depend on whether the sample size was n = 36 or n = 9.) (Use/round to 2 decimal places)Cohen's d =
Recent results suggest that children with ADHD tend to watch more TV than children who are not diagnosed with the disorder. To examine this relationship, a researcher obtains a random sample of n = 36 children, 8 to 12 years old, who have been diagnosed with ADHD. Each child is asked to keep a journal recording how much time each day is spent watching TV. The average daily time for the sample is M = 4.9 hours. It is known that the average time for the general population of 8 to 12-year-old children is μ = 4.1 hours with σ = 1.8.
Are the data sufficient to conclude that children with ADHD watch significantly more TV than children without the disorder? Use a two-tailed test with = .05. Which of the below options is the best answer? Answer A or B in the box
Option A. The children with ADHD are significantly different.
Option B. The children with ADHD are notsignificantly different.
If the researcher had used a sample of n = 9 children and obtained the same sample mean, would the results be sufficient to reject H0? Select your answer from the below options. Answer A or B in the box
Option A. Reject H0
Option B. Fail to reject H0
Compute Cohen's d for this study. (Notice that the value you obtain does not depend on whether the sample size was n = 36 or n = 9.) (Use/round to 2 decimal places)
Cohen's d =
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