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Irina-Kira [14]
4 years ago
9

A survey asked students in different grades about their favorite places to go on vacation. The results are shown in the table be

low. What is the conditional relative frequency of twelfth graders who prefer to vacation at the beach? 9 th 10 th 11 th 12 th
Total Beach 86 98 76 112 372
Mountains 64 65 49 39 217
Cities 72 76 101 87 336
Amusement Park 49 33 52 46 180
Total 271 272 278 284 1,105


0.257
0.101
0.394
0.301
Mathematics
1 answer:
Bas_tet [7]4 years ago
7 0

Answer:  c) 0.394

<u>Step-by-step explanation:</u>

NOTE: It is much easier to solve if you provide the table.

\begin{array}{l|c|c|c|c||c}&9th&10th&11th&12th&TOTAL\\Beach&86&98&76&\boxed{112}&372\\Mountains&64&65&49&39&217\\Cities&72&76&101&87&336\\\underline{Amusement\ Park}&\underline{\quad49\quad}&\underline{\quad33\quad}&\underline{\quad52\quad}&\underline{\quad46\quad}&\underline{\quad180\quad}\\TOTAL&271&272&278&\boxed{284}&1,105\end{array}\\\\\\\\\dfrac{Beach\ 12th\ graders}{Total\ 12th\ graders}=\dfrac{112}{284}=0.394

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