LITERAL EQUATIONS2S=n(a+k) for k

1 answer:

7 0

$2S=n(a+k)\ \ \ |Omit\ the\ bracket\\\\
2S=na+nk\ \ \ \ |Subtract\ "na"\ from\ each\ side\\\\
2S-na=nk\ \ \ \ |Divide\ by\ n\\\\
\frac{2S-na}{n}=k\\\\Solution\ is\ k=\frac{2S-na}{n}.$

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alisha [4.7K]

Answer:

$P(100$

And we can find this probability with this difference:

$P(0$

And in order to find these probabilities we can using tables for the normal standard distribution, excel or a calculator.

$P(0$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

$X \sim N(100,20)$