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kkurt [141]
3 years ago
15

The results for a survey of 120 students who were selected randomly are listed below.

Mathematics
1 answer:
RoseWind [281]3 years ago
7 0

Answer:

Company X - 190 students

Company Y - 114 students

No phones - 76 students

Step-by-step explanation:

1) Find a multiplier to get the ratio from sample to population; to compare the sample to the population

380/120 = 3.16666667 or 3 & 1/6

380 comes from the total population of students and 120 comes from the randomly selected.

2) Use our multiplier to compare the results to the population

<u>People with Company X</u>

  • 60 * 3.16667 = 190

<u>People with Company Y </u>

  • 36 * 3.166667 = 114

<u>People with no cell phone</u>

  • 24 * 3.166667 = 76.0000000001 = 76 (rounded)

<u>Double check</u>

190 + 114 + 76 = 380

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