Solusi - Probabilitas kumulatif dalam distribusi normal standar

Cumulative probability

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1. Find the cumulative probability of the z-scores values up to $- 7$

More than $99, 9 %$ of the time, data with a standard normal distribution lies within plus or minus $3, 9$ standard deviations of the mean.

The cumulative probability of the values up to $- 7$ is $0$ .
$p (n < - 7) = 0$
The cumulative probability that $n < - 7$ is $0 %$

2. Find the cumulative probability of the z-scores values up to $- 12$

Más del $99, 9 %$ del tiempo, los datos con una distribución normal estándar se encuentran dentro de más o menos $3, 9$ desviaciones estándar de la media.

La probabilidad acumulativa de los valores hasta $- 12$ es $0$ .
$p (n < - 12) = 0$
La probabilidad acumulativa de que $n < - 12$ sea $0 %$

3. Calculate the cumulative probability between -7 and -12

To find the cumulative probability of the area between the two z-scores, subtract the smaller cumulative probability (everything to the left of $- 12$ ) from the larger cumulative probability (everything to the left of $- 7$ ):

$0 - 0 = 0$
$p (- 12 < n < - 7) = 0$
The cumulative probability that $- 12 < n < - 7$ is $0 %$

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Normal and standard normal distributions

Solusi - Probabilitas kumulatif dalam distribusi normal standar

Penjelasan langkah demi langkah

1. Find the cumulative probability of the z-scores values up to −7

2. Find the cumulative probability of the z-scores values up to −12

3. Calculate the cumulative probability between -7 and -12

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Latihan Terkait Terbaru Dipecahkan

1. Find the cumulative probability of the z-scores values up to $- 7$

2. Find the cumulative probability of the z-scores values up to $- 12$