normal distribution - find z score due: october 4 at 8:00 am grade: 30% normal distribution - empirical rule…

normal distribution - find z score due: october 4 at 8:00 am grade: 30% normal distribution - empirical rule normal distribution - empirical rule question when tallulah commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 48 minutes and a standard deviation of 4 minutes. using the empirical rule, what percentage of her commutes will be between 36 and 60 minutes? answer attempt 1 out of 4 upload work scientific calculator graphing calculator adalberto quinteros perez (st... log out

normal distribution - find z score due: october 4 at 8:00 am grade: 30% normal distribution - empirical rule normal distribution - empirical rule question when tallulah commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 48 minutes and a standard deviation of 4 minutes. using the empirical rule, what percentage of her commutes will be between 36 and 60 minutes? answer attempt 1 out of 4 upload work scientific calculator graphing calculator adalberto quinteros perez (st... log out

Answer

Explicación:

Paso 1: Identificar los límites en términos de desviaciones estándar

Calculamos cuántas desviaciones estándar están los valores 36 y 60 del promedio. Para $x = 36$, $z_1=\frac{36 - 48}{4}=\frac{- 12}{4}=-3$. Para $x = 60$, $z_2=\frac{60 - 48}{4}=\frac{12}{4}=3$.

Paso 2: Aplicar la regla empírica

La regla empírica para una distribución normal dice que aproximadamente el 99,7% de los datos se encuentran dentro de $\mu\pm3\sigma$. Aquí, los valores de 36 y 60 minutos están a 3 desviaciones estándar del promedio.

Respuesta:

99,7%