need help with algebra questions details below need answers with work shown

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Please complete the following questions. It is important that you show all work you did to solve the problems when you submit your work. This includes any calculations, diagrams, or graphs that helped you solve it.

  1. OPEN ENDED Sketch a positively skewed graph. Describe a situation in which you would expect data to be distributed this way.
  2. Writing in Math Use the information on page 737 (attached below) to explain what statistics a teacher should tell the class after a test. Include the mean, median, and mode of the given data set and which measure of central tendency you think best represents the test scores and why. How will the measures of central tendency be affected if Mr. Dent adds 5 points to each score?
  3. Writing in Math Use the information on page 762(attached below) to explain how surveys are used in marketing. Find the margin of error for those who spend $249 or less if 807 mothers were surveyed. Explain what this margin of error means.


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