## anonymous one year ago 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.

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1. Michele_Laino

total number of student: 84+85+31=...

2. Michele_Laino

3. anonymous

It is 200 right.

4. Michele_Laino

ok! right! probability for sandwich is: 84/200=...

5. anonymous

0.42

6. Michele_Laino

yes! or equivalently 42%

7. Michele_Laino

next: probability for hot dog, is: 85/200=...

8. 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

9. Michele_Laino

$\Large \frac{{85}}{{200}} = ...?$

10. Michele_Laino

next: probability for salad, or experimental frequency for salad is: $\Large \frac{{31}}{{200}} = ...?$ please complete my computation