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Suppose you toss a coin four times and count the number of tails. Fill in the blanks in the following table to create a probability model for this situation. Give all probabilities as a fraction or a number between 0 and 1.Group of answer choices0 tails: 216, 1 tail: 416, 2 tails:416, 3 tails:416, 4 tails: 2160 tails: 116, 1 tail: 416, 2 tails: 616, 3 tails: 416, 4 tails:1160 tails: 016, 1 tail: 416, 2 tails: 616, 3 tails: 416, 4 tails:016

Question

Suppose you toss a coin four times and count the number of tails. Fill in the blanks in the following table to create a probability model for this situation. Give all probabilities as a fraction or a number between 0 and 1.Group of answer choices0 tails: 216, 1 tail: 416, 2 tails:416, 3 tails:416, 4 tails: 2160 tails: 116, 1 tail: 416, 2 tails: 616, 3 tails: 416, 4 tails:1160 tails: 016, 1 tail: 416, 2 tails: 616, 3 tails: 416, 4 tails:016

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Solution

Para resolver este problema, primero debemos entender que estamos lanzando una moneda cuatro veces y contamos el número de caras. Cada lanzamiento de la moneda tiene dos posibles resultados: cara (C) o cruz (X).

El número total de posibles resultados al lanzar la moneda cuatro veces es 24=162^4 = 16.

Ahora, vamos a calcular la probabilidad de obtener 0, 1, 2, 3 y 4 caras.

  1. 0 caras (4 cruces):

    • Solo hay una forma de obtener 0 caras: XXXX.
    • Probabilidad: 116\frac{1}{16}.
  2. 1 cara:

    • Hay 4 formas de obtener 1 cara: CXXX, XCXX, XXCX, XXXC.
    • Probabilidad: 416=14\frac{4}{16} = \frac{1}{4}.
  3. 2 caras:

    • Hay (42)=6\binom{4}{2} = 6 formas de obtener 2 caras: CCXX, CXCX, CXXC, XCCX, XCX, XXCC.
    • Probabilidad: 616=38\frac{6}{16} = \frac{3}{8}.
  4. 3 caras:

    • Hay (43)=4\binom{4}{3} = 4 formas de obtener 3 caras: CCCX, CCXC, CXCC, XCCC.
    • Probabilidad: 416=14\frac{4}{16} = \frac{1}{4}.
  5. 4 caras:

    • Solo hay una forma de obtener 4 caras: CCCC.
    • Probabilidad: 116\frac{1}{16}.

Entonces, la tabla de probabilidades es la siguiente:

  • 0 caras: 116\frac{1}{16}
  • 1 cara: 416=14\frac{4}{16} = \frac{1}{4}
  • 2 caras: 616=38\frac{6}{16} = \frac{3}{8}
  • 3 caras: 416=14\frac{4}{16} = \frac{1}{4}
  • 4 caras: 116\frac{1}{16}

Por lo tanto, la respuesta correcta es:

0 tails: 116\frac{1}{16}, 1 tail: 416\frac{4}{16}, 2 tails: 616\frac{6}{16}, 3 tails: 416\frac{4}{16}, 4 tails: 116\frac{1}{16}.

This problem has been solved

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