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3 years ago

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Professional ethics can best be defined by what? 1 Rules of right living 2 Reflective decision-making 3 Rules promulgated by pro

fessional societies 4 A common concern for collective self-discipline 5 The science of rightness and wrongness of human conduct?

1 answer:

arsen [322]3 years ago

5 0

Answer:

E

Step-by-step explanation:

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K12 5 GRADE WORK NEED HELP MARK CROWN

Dvinal [7]

Answer:

6.85 oz

Step-by-step explanation:

13.7 ÷ 2 = 6.85

4 0

3 years ago

Read 2 more answers

Meghan has $1.10 I'm dimes nickels and pennies. She has three times as many nickels as pennies, and the number of dimes is two l

Dmitriy789 [7]

N=3p and d=p-2 we are also told that:

p+n+d=110 using n and d from above we get:

p+3p+p-2=110

5p-2=110

5p=112

p=112/5

Which is not an integer...are we sure there is no typo in the question...

There are 3 times as many nickels as pennies

There are pennies-2 dimes

And the total is $1.10

Just checking, because something is off...

7 0

3 years ago

After a 60% reduction, you purchase a new washing machinewashing machine on sale for $256. what was the original price of the

madreJ [45]

Answer: 640

Step-by-step explanation:

if 256 is 40%, then 64 is 10%, making 640 100%

8 0

2 years ago

A sample of 100 cars driving on a freeway during a morning commute was drawn, and the number of occupants in each car was record

makkiz [27]

Answer:

$E(X)=1*0.74 +2*0.1 +3*0.11+ 4*0.03 +5*0.02=1.49$

$Var(X)=E(X^2)-[E(X)]^2 =3.11-(1.49)^2 =0.8899$

$Sd(X)=\sqrt{Var(X)}=\sqrt{0.8899}=0.943$

Step-by-step explanation:

For this case we have the following data given:

X 1 2 3 4 5

F 74 10 11 3 2

The total number of values are 100, so then we can find the empirical probability dividing the frequency by 100 and we got the followin distribution:

X 1 2 3 4 5

P(X) 0.74 0.10 0.11 0.03 0.02

Previous concepts

In statistics and probability analysis, the expected value "is calculated by multiplying each of the possible outcomes by the likelihood each outcome will occur and then summing all of those values".

The variance of a random variable Var(X) is the expected value of the squared deviation from the mean of X, E(X).

And the standard deviation of a random variable X is just the square root of the variance.

Solution to the problem

In order to calculate the expected value we can use the following formula:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=1*0.74 +2*0.1 +3*0.11+ 4*0.03 +5*0.02=1.49$

In order to find the standard deviation we need to find first the second moment, given by :

$E(X^2)=\sum_{i=1}^n X^2_i P(X_i)$

And using the formula we got:

$E(X^2)=1^2 *0.74 +2^2 *0.1 +3^2 *0.11 +4^2 0.03 +5^2 *0.02=3.11$

Then we can find the variance with the following formula:

$Var(X)=E(X^2)-[E(X)]^2 =3.11-(1.49)^2 =0.8899$

And then the standard deviation would be given by:

$Sd(X)=\sqrt{Var(X)}=\sqrt{0.8899}=0.943$

7 0

2 years ago

NOTE: Angles not necessarily drawn to scale.<br> X = ____ degrees

Varvara68 [4.7K]

Answer:

x =60°

Step-by-step explanation:

GOOD QUESTION BRO

7 0

3 years ago