![\text{Var}[X]=E[X^2]-(E[X])^2 \\ E[X^2]=\sum x^2\Pr(X=x) \\ E[X] = \sum x\Pr(X=x)](/tpl/images/0395/5562/8b4f5.png)
.![E[X]=(1\times0.20)+(2\times0.30) + (3\times0.10) + (4\times 0.20)+(5\times0.05) ](/tpl/images/0395/5562/d4524.png)
, note we can get rid of the 0 because 0 times anything = 0![E[X]=(1^2\times0.20)+(2^2\times0.30) + (3^2\times0.10) + (4^2\times 0.20)+(5^2\times0.05) ](/tpl/images/0395/5562/7c125.png)
, note we can get rid of the 0 because 0 times anything = 0.![\text{SD}[X] = \sqrt{\text{Var}[X]}](/tpl/images/0395/5562/36699.png)
you find SD=[X]=1.46Give the standard deviation for the probability distribution. (round to two decimal places)
...
Mathematics, 29.11.2019 02:31 oaaliyah505
Give the standard deviation for the probability distribution. (round to two decimal places)
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 16:30, chloesmolinski0909
Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls
Answers: 1
Mathematics, 21.06.2019 18:00, MayFlowers
Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.
Answers: 1
Mathematics, 21.06.2019 19:40, friendsalwaysbae
Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9
Answers: 1
Mathematics, 21.06.2019 23:00, kayvontay4
The coordinate grid shows a pentagon. the pentagon is translated 3 units to the right and 5 units up to create a new pentagon. what is the rule for the location of the new pentagon?
Answers: 3
You know the right answer?
Questions in other subjects:
Biology, 03.12.2020 08:00
Spanish, 03.12.2020 08:00
Mathematics, 03.12.2020 08:00
