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

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Mathematics

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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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GET READY for the Lesson On Mr. Dent's most recent Algebra 2 test, his students earned the following scores. 72|70|77|76|90|68|81|86|34|94 71 84 89 67 19 85 75630 94 When his students ask how they did on the test, which measure of central tendency should Mr. Dent use to describe the scores? GET READY for the Lesson A survey was Back-to-School Clothes Spending conducted asking mothers how much $249 or less they spend per student $250-5349 on back-to-school $350 or more 10% clothing. The results of Don't know the survey are shown. 20% 49% When polling organizations want to find how the public 21% feels about an issue, they survey a small portion of the Source: Harris Interactive for Sears, Roebuck population
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Explanation & Answer

Attached.

Question 1:

Situation with can result in a positively skewed graph:
If a test conducted in a school has a high difficulty level, then most of the students will have a poor-toaverage performance in it. This bulk of students will form the maximum part of the distribution, towards
the left side of the positively skewed distribution curve.
Question 2
The scores are:
72

70

77

76

90...


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