91影视

We are given,

The literacy rate for women in Afghanistan is $12\%$

X = the number of Afghani women

Let X the number of women ask until one says she is literature. The sample size X takes on the values $0,1,2,3,......$with probability $p=0.12$

Therefore, X follows geometric distribution with the parameters,$X~G(0.12)$

Let X the number of women ask until one says she is literature. The sample size X takes on the values $0,1,2,3,......$with probability $p=0.12$

Therefore, X follows geometric distribution with the parameters, $X~G(0.12)$

To find the probability that $X=5$step in T1-83+ calculator is as follow:

Press $1$and then press $2^{nd}$DISTR

Arrow down to geometpdf. Press ENTER

Enter $(0.12,5)$

The result shows$P(X=5)=0.4723$

Let X the number of women ask until one says she is literature. The sample size X takes on the values $0,1,2,3,......$with probability $p=0.12$

Therefore, X follows geometric distribution with the parameters $X~G(0.12)$

To find the probability that $X=10$step in T1-83+ calculator is as follow:

Press $1$and then press $2^{nd}$DISTR

Arrow down to geometpdf. Press ENTER

Enter $(0.12,10)$

The result shows$P(X=10)=0.7215$

Let X the number of women ask until one says she is literature. The sample size X takes on the values $0,1,2,3,......$with probability $p=0.12$

Therefore, X follows geometric distribution with the parameters $X~G(0.12)$

$$\begin{gathered} Mean\left(渭\right)=\frac{1}{p} \\ s\tan darddeviation\left(未\right)=\sqrt{\frac{1-p}{p^2}} \end{gathered}$$

Substitute the value

$$\begin{gathered} mean\left(渭\right)=\frac{1}{0.12} \\ mean\left(渭\right)=8.333 \\ S\tan darddeviation\left(未\right)=\sqrt{\frac{1-0.12}{{(0.12)}^2}} \\ S\tan darddeviation\left(未\right)=7.82 \end{gathered}$$