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brooke has scores of 84, 72, 90, 95, and 87 on her first five quizzes. …

Question

brooke has scores of 84, 72, 90, 95, and 87 on her first five quizzes. after taking the sixth quiz, brookes mean score increased. which could be brookes sixth quiz score? select three options. 85 90 83 86 92

Explanation:

Step1: Calcular la media de los primeros cinco puntajes

La media de los puntajes 84, 72, 90, 95 y 87 se calcula como $\frac{84 + 72+90 + 95+87}{5}=\frac{428}{5}=85.6$.

Step2: Determinar los puntajes que aumentan la media

Para que la media aumente después del sexto examen, el sexto puntaje debe ser mayor que 85.6. De las opciones dadas, 90, 86 y 92 son mayores que 85.6.

Answer:

  • 90
  • 86
  • 92