Question 1

Please help inserting the numbers into formula I need help with this exercise practicing for ged test in 10 days im a 61-year-old woman in need of help really need help please help me with exercise five

Please help inserting the numbers into formula I need help with this exercise practicing-example-1

Question 2

Given:

$Z=(X-\mu)/(\sigma)$

a)

$\begin{gathered} X=\text{ \$}70 \\ \mu=\text{ \$}100\text{ } \\ \sigma=\text{ \$12} \\ \\ Therefore, \\ Z=(70-100)/(12)=-2.5 \end{gathered}$

Hence,

$P\left(xTherefore, the answer is 0.0062097.b) [tex]\begin{gathered} X_1=\text{ \$90,}X_2=\text{ \$120} \\ \\ Z_1=(90-100)/(12)=-0.8333 \\ Z_2=(120-100)/(12)=1.6667 \end{gathered}$

Therefore,

$P\left(-0.8333Hence, the answer is 0.74988.c) [tex]\begin{gathered} X=\text{ \$140} \\ \\ Z=(140-100)/(12)=3.3333 \end{gathered}$

Therefore,

$P\left(x>Z\right)=0.00042911$

Hence, the answer is 0.00042911.

0 Comments

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

0 Comments

Please log in or register to add a comment.

Other Questions