Estadística by Murray Spiegel, Larry Stephens

By Murray Spiegel, Larry Stephens

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8, entendiéndose que tienen tres y dos cifras significativas, respectivamente, no puede ser exacto a más de dos cifras significativas. 812, pero en este producto no todas las cifras son significativas. 85. 11825. 11825, es claro que sólo los dos primeros dígitos del producto son significativos y el resultado se escribe como 22. 5. 8 1 2 En el resultado no se debe conservar más de una cifra dudosa, por lo que el resultado es 22 a dos cifras significativas. 66 = 22, a dos cifras significativas, lo cual coincide con el resultado obtenido antes.

9, un diagrama de dispersión de los gimnasios y de los miembros. 10 se da la mortalidad infantil por 1 000 nacidos vivos, para blancos y para no blancos, desde el año 2000 hasta el 2005. Usar una gráfica adecuada para representar estos datos. 01_Cap. 11 se dan las velocidades orbitales de los planetas de nuestro sistema solar. Graficar estos datos. 12 se da la matrícula (en miles) de las escuelas públicas en los niveles kínder a grado 8, grado 9 a grado 12, y universidad, de 2000 a 2006. Graficar estos datos usando gráficas de línea, de barras y de columna apilada.

Se resuelve la ecuación obtenida en el paso 3. Se verifican las soluciones. 10/21/08 5:59:17 PM 8 CAPÍTULO 1 VARIABLES Y GRÁFICAS EJEMPLO 37 Solucione la siguiente ecuación logarítmica: log4(x + 5) = 3. Primero, se expresa esta ecuación en forma exponencial como x + 5 = 43 = 64. A continuación se despeja x como sigue, x = 64 − 5 = 59. Por último se verifica la solución. log4(59 + 5) = log4(64) = 3 ya que 43 = 64. EJEMPLO 38 Resuelva la ecuación logarítmica siguiente: log(6y − 7) + logy = log(5).

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