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2 years ago

10

Choose the equation for the graph

1 answer:

DIA [1.3K]2 years ago

6 0

Look up on desmos it will give the correct answer

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The probability distribution function for the discrete random variable where x is equal to the number of red lights drivers typi

Ivahew [28]

Using probability concepts, it is found that:

a) The missing value is 0.04.

b) The mean is of 0.37.

The distribution is given by:

$P(X = 0) = 0.76$

$P(X = 1) = 0.15$

$P(X = 2) = 0.05$

$P(X = 3) = x$

Item a:

The sum of <u>all the probabilities has to be 1</u>, that is:

$\sum_{i = 0}^{3} P(X = i) = 1$

Thus:

$0.76 + 0.15 + 0.05 + x = 1$

$0.96 + x = 1$

$x = 0.04$

The missing value is 0.04.

Item b:

The mean is given by the <u>sum of each outcome multiplied by it's probability</u>, thus:

$E(X) = 0(0.76) + 1(0.15) + 2(0.05) + 3(0.04) = 0.37$

The mean is of 0.37.

A similar problem is given at brainly.com/question/20709747

7 0

3 years ago

Employment Surveys Employment statistics in the US are often based on two nationwide monthly surveys: the Current Population Sur

KATRIN_1 [288]

Answer:

Following are the solution to this question:

Step-by-step explanation:

Just Parts (c) were discussed because they were mentioned in the issue.

A subpart of (c):

In point (i)

The answer is 1 for the CES since only CES has salary and wage rates information.

In point (ii)

The answer is 2 for the CPS because only the CPS has job status information.

In point (iii)

The answer is 3 for the CPS as detailed in this issue, neither CES nor CPS explicitly states gender information. Even so, population studies generally include a 'gender' requirement.

3 0

3 years ago

Time intervals measured with a stopwatch typically have an uncertainty of about 0.2 seconds, due to human reaction time at the s

Yakvenalex [24]

Answer:

a) 2,650%

b) 27,400%

c) 164,900%

Step-by-step explanation:

We want to measure the percentage we would have to increase the typical value to obtain the values given in a), b) and c).

But 0.2 increased in x% equals

0.2 + 0.2(x/100) =0.2(1+x/100)

So, if we want to increase 0.2 in x%, we must multiply it by (1+x/100)

a)

We need to find the value of x such that

0.2(1+x/100) = 5.5 ⇒ (1+x/100)=5.5/0.2 ⇒ 1+x/100=27.5

⇒ x/100=26.5 ⇒ x=2,650%

b)

0.2(1+x/100) = 55 ⇒ (1+x/100)=55/0.2 ⇒ 1+x/100=275

⇒ x/100=274 ⇒ x=27,400%

c)

5.5 min = 5.5*60 s = 330

0.2(1+x/100) = 330 ⇒ (1+x/100)=330/0.2 ⇒ 1+x/100=1,650

⇒ x/100=1,649 ⇒ x=164,900%

4 0

3 years ago

Quick math question ghghghujhghj

yawa3891 [41]

$\text{Hey there!}$

$\bf{3(4x + 1) - (5x + 7)}$

$\text{FIRST: distribute the NEGATIVE sign}$ $\text{(On the RIGHT side of the problem/equation)}$

$\bf{-1 (5x + 7)}$

$\bf{-1(5x) + -1(7)}$

$\bf{-1(5x) = -5x}$

$\bf{-1(7) = -7}$

$\bf{\underline{= -5x - 7}}$

$\text{SECOND: distribute the LEFT side of the problem/equation}$

$\bf{3(4x+1)}$

$\bf{3(4x) + 3(1)}$

$\bf{3(4x) = 12x}$

$\bf{3(1) = 3}$

$\bf{\underline{12x+3}}$

$\text{THIRD: make the new equation}$

$\text{Equation becomes: \bf{12x + 3 - 5x - 7}}$

$\text{FOURTH: COMBINE your like terms}$

$\bf{(12x - 5x) + (3 - 7)}$

$\bf{12x - 5x = 7x}$

$\bf{3 - 7 = -4}$

$\text{ANSWER}$

$\boxed{\text{Thus, your answer is: \boxed{\huge\text{\bf7x - 4}}}}}\checkmark$

$\text{Good luck on your assignment and enjoy your day!}$

~ $\frak{LoveYourselfFirst:)}$

3 0

3 years ago

Please help meee please

alex41 [277]

Answer:

The answer is Rad 169 or 13 .

Step-by-step explanation:

Hope it helps , good luck .

8 0

3 years ago