In a study of parents who have children with attention-deficit/hyperactivity disorder (ADHD), parents were asked to rate their overall stress level using the Parental Stress Scale (PSS). This scale has 18 items that contain statements regarding both positive and negative aspects of parenthood. Respondents are asked to rate their agreement with each statement using a 5-point scale (1 = strongly disagree to 5 = strongly agree). The scores are summed such that a higher score indicates greater stress. The mean rating for the 50 parents in the study was reported as 52.91 with a standard deviation of 10.39. Do you think that these data are approximately normally distributed Explain why or why not. Find the 90% margin of error. Round your answer to three decimal places. Find the corresponding confidence interval. Round your answers to three decimal places.
In a study of parents who have children with attention-deficit/hyperactivity disorder (ADHD), parents were asked to rate their overall stress level using the Parental Stress Scale (PSS). This scale has 18 items that contain statements regarding both positive and negative aspects of parenthood. Respondents are asked to rate their agreement with each statement using a 5-point scale (1 = strongly disagree to 5 = strongly agree). The scores are summed such that a higher score indicates greater stress. The mean rating for the 50 parents in the study was reported as 52.91 with a standard deviation of 10.39.
Do you think that these data are approximately normally distributed Explain why or why not.
Find the 90% margin of error. Round your answer to three decimal places.
Find the corresponding confidence interval. Round your answers to three decimal places.
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