anonymous
  • anonymous
Jane surveys a random sample of 200 students from her middle school to learn what type of school lunch is preferred. The table below shows the result of the survey: Lunch Type Sandwich Hot Dog Salad Number of students 84 85 31 Which of the following inferences can be made based on the data? A sandwich is the most preferred lunch. A sandwich is two times more popular than a salad. Sandwiches and hot dogs are almost equally preferred. A hot dog is almost two times more popular than a salad.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Michele_Laino
  • Michele_Laino
total number of student: 84+85+31=...
Michele_Laino
  • Michele_Laino
please complete my computation
anonymous
  • anonymous
It is 200 right.

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Michele_Laino
  • Michele_Laino
ok! right! probability for sandwich is: 84/200=...
anonymous
  • anonymous
0.42
Michele_Laino
  • Michele_Laino
yes! or equivalently 42%
Michele_Laino
  • Michele_Laino
next: probability for hot dog, is: 85/200=...
Michele_Laino
  • Michele_Laino
the probability is given by the subsequent ratio r: r= favorable outcome/possible outcome now we can consider our probabilities as experimental frequencies
Michele_Laino
  • Michele_Laino
\[\Large \frac{{85}}{{200}} = ...?\]
Michele_Laino
  • Michele_Laino
next: probability for salad, or experimental frequency for salad is: \[\Large \frac{{31}}{{200}} = ...?\] please complete my computation

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