Can someone help me on this question please?

Answer:

The expected value of X = 1.4

Step-by-step explanation:

Given that:

The probability of Ben calling Chris = 0.3

The probability of Chris calling Adam = 0.4

The probability of Daisy calling Adam = 0.7

The probability distribution function can be calculated as follows:

P(X = 0) = P( nobody calls Adam)

= (1 - 0.3)×(1 - 0.4)×(1 - 0.7)

= 0.7 × 0.6 × 0.3

= 0.126

P(X = 1) =  P(if only Ben call +if only Chris call + if only Daisy call)

P(X = 1) = 0.3 × (1-0.4)  × (1-0.7) + (1-0.3) × 0.4 × (1 - 0.7) + (1 - 0.3)  × (1-0.4)  × 0.7

P(X = 1) = (0.3 × 0.6 × 0.3) + (0.7 × 0.4 × 0.3) + (0.7 × 0.6 × 0.7)

P(X = 1) = 0.432

P(X = 2) = P(if only Ben & Chris Call + if only  Ben & Daisy call + if only Chris & Daisy call)

P(X = 2) = 0.3 × 0.4 × (1 - 0.7) + 0.3 × 0.7 × (1 - 0.4) + (1 - 0.3) × 0.4 × 0.7

P(X = 2) =  ( 0.3 × 0.4 × 0.3 ) + (0.3 × 0.7 × 0.6) + (0.7 × 0.4 × 0.7)

P(X = 2) = 0.358

P(X = 3) = P(i.e. all three call) =0.3 × 0.4 × 0.7 = 0.084

Therefore; the expected value of X is calculated by using the formula:

[tex]E(X) = \sum x P(X=x)[/tex]

E(X) = (0 × 0.126) + (1 × 0.432) + (2 × 0.358) + (3 × 0.084)

E(X) = 0 + 0.432 + 0.716 + 0.252

E(X) = 1.4

Thus, the expected value of X = 1.4

Answer:

52+4? that's 56. the simplified version 4ft 6in

Step-by-step explanation:

Answer: No, Titus is incorrect.

Step-by-step explanation: Two shapes are congruent when they have the same size and shape, but one is created of rotation, reversion or translation of the other.

So, hexagons FEDCBA and F'E'D'C'B'A' are congruent because they have the same size and shape, however they are reversed and translated from each other, i.e.:

Comparing the coordinates of both hexagons:

F (-6,6) → F' (6, -4)

A (-10,6) → A' (10,-4)

E (-4,4) → E' (4, -6)

B (-12,4) → B' (12, -6)

D (-6,2) → D' (6, -8)

C (-10,2) → C' (10, -8)

We notice that the transformation necessary to transform FEDCBA into F'E'D'C'B'A' is

Therefore, it is (x,y) → ( -x, y-10).

So, Titus is incorrect about the transformations that prove the hexagons are congruent.

Answer:

Width = 7, Length = 42

Step-by-step explanation:

Length is 6 times its width, means that it's the same number but times 6 so we'll use "x" for both length and width:

6x · x = 294

6x^2 = 294

divide both sides by 6

x^2 = 49

[tex]\sqrt{x^2}[/tex] = [tex]\sqrt{49}[/tex]

x = 7, width is 7 and length is 6(7) = 42

(-inf, 1]

Personal comment

Sorry this took so long

In short, you had it flipped, always put your smallest value first and your largest value second.

Reason:

Interval notation is

[(minima, maxima)]

Which is basically saying the minimum and the maximum, and as such you always end up having the smallest value first.

Putting the reasoning together;

A negative is always less than a positive in practice, therefore, your negative infinity should go first.

Hope this helps :)

A

thats where anything with 2 negatives are

Answer:

A

Step-by-step explanation:

in quadrant III

Answer:

4.3 pages

beacause 26 divided by 6 is 4.3

Answer:

w will be less than 75.

Step-by-step explanation:

Given the expression;

75/w = 150/100

We are to determine whether w is greater than or less than 75.

If you look at the right hand side of the expression, 150/100, you will see that the denominator is greater than the numerator. Due to the equality sign between the fractions, the same will be applicable to 75/w meaning that w will also be less than 75.

Answer:

5 pints is equal to 10 cups

Step-by-step explanation:

Step 1: So to start us off, because every 5 apples weighs 0.60 kilograms, we're going to divide 0.60 by 5 to get the weight of ONE apple.

0.60 divided by 5= 0.12

Now we know how much a single apple weighs in kilograms and we can move onto the next step.

Step 2: The next step is to times the weight of one apple by 12 because that would give us our answer for the weight in kilograms of 12 apples.

0.12 times 12=1.44

Hopefully, this is correct and helps you! Sorry if I made any errors, it would be best to go back and do the steps yourself just to make sure if that makes you feel any better. Good luck! xxoo

-Sav

Answer:

1.44kg

Step-by-step explanation:

If they are proportional then you can use the unitary method:

If 5 apples=0.6kg then 1 apple=0.12kg as this is 0.6/5 (because you divided the apples by 5 so you have to do the same to the kg)

then you can work out that 12 apples=1.44kg because 0.12*12 is 1.44 and you multiply by 12 as this is what you multiplied the apples by so (becasue they are proportional then you have to do the same to the kg)

hope this helps :)  

Answer:

>

Step-by-step explanation:

> 117 is greater than 17

Answer:

26 shots.

Step-by-step explanation:

60% of 42 is 25.2 but you can't make .2 of a shot so you have to round up.

Answer:

Step-by-step explanation:

Trust me - 19

Answer:

Lollll unless this isn't a joke it's 19, if it is a joke then it's 21

Answer:

One solution

Step-by-step explanation:

Only one solution, as the lines intersect only at (-2,2).

Answer:6

Step-by-step explanation:don't know

Answer:

12

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation. Point Form: ( 9 , 12 ) Equation Form: x = 9 , y = 12

Answer :B 4 miles

thank me later

Answer:

x=31

Step-by-step explanation:

4x+6=134

   -6   -6

4x=124

4      4

x=31

Answer:

X=32

Step-by-step explanation:

134-6=128

128÷4=32

4(32)+6=134

Answer:

HEEYYYY

Step-by-step explanation:

THANK YOU SO MUCH!!! :)

Answergbshrkghjgfsgsfg

Step-by-step explanation:

sgsfgafgfgfgffg

Answer:

$6.00

Step-by-step explanation:

Using a system of equations, it is found that each baseball costs $6.

For our system, we are going to say that:

The first customer paid $60 for four baseballs and two gloves, hence:

[tex]4x + 2y = 60[/tex]

Simplifying by 2:

[tex]2x + y = 30 \rightarrow y = 30 - 2x[/tex]

The second customer paid $84 for five baseballs and three gloves, hence:

[tex]5x + 3y = 84[/tex]

Since [tex]y = 30 - 2x[/tex]

[tex]5x + 3(30 - 2x) = 84[/tex]

[tex]5x + 90 - 6x = 84[/tex]

[tex]x = 6[/tex]

Each baseball costs $6.

A similar problem is given at https://brainly.com/question/24778333

Answer:

The answer for this problem is 60

Step-by-step explanation:

So we know Eric has 80 cards right ? ye sew do cf v eknbauefsgbduiwjxnsizjdg fyj eaoX

Answer:

16 cards out of the 80 are Texas Rangers, 1 of them better be Nolan Ryan or Beltre

Step-by-step explanation:

16 divided by 80 is 20%

Answer:

-7

Step-by-step explanation:

A negative negative is a positive, because you are basically doing a negative times a negative which is a positive

Answer:

X=0.667

Step-by-step explanation:

3x-2=0

3x=2

X=2/3

X=0.667

Answer:

C

Step-by-step explanation:

I believe the answer is C because both lines cross through point 1,1

Answer:

3.73 ( The three is infinite)

Step-by-step explanation:

Complete Question

A measurement template with a historical value of 25.500 mm is measured 27 times and a mean value of 25.301 mm is recorded. What is the percent bias when the tolerance is +/- 0.3?

Answer:

The percent bias is  [tex]B = 33.167 \%[/tex]  

Step-by-step explanation:

From the question we are told that

   The historical value  is  [tex]S = 25.00 \ mm[/tex]

   The number of times it is measured is  n  =  7  

    The mean value is  [tex]\= x = \frac{\sum x_i }{n} = 25.301 \ mm[/tex]

    The tolerance is  [tex]t =\pm 0.3 = 0.3 - (-0.3) = 0.6[/tex]

Generally the percent bias is mathematically represented as

      [tex]B = 100 * \frac{\= x - \tau }{ t}[/tex]

=>  [tex]B = 100 * \frac{25.301 - 25.5000 }{0.6}[/tex]

=>  [tex]B = 33.167 \%[/tex]  

Answer:Yes, he is correct

Step-by-step explanation:Plug 6 in as your x-value in the equation y=-275x+3500 and you will get y=1850

Answer:

Step-by-step explanation:

It may be easier to find the sum, then "rationalize" the denominator.

  [tex]\dfrac{2i}{2+i}-\dfrac{3i}{3+i}=\dfrac{2i(3+i)-3i(2+i)}{(2+i)(3+i)}=\dfrac{6i+2i^2-6i-3i^2}{6+5i+i^2}\\\\=\dfrac{1}{5+5i}=\dfrac{5-5i}{(5+5i)(5-5i)}=\dfrac{5-5i}{25+25}=\dfrac{5-5i}{50}\\\\=\boxed{0.1-0.1i}[/tex]

__

Of course, it doesn't hurt to have a suitable calculator.

Answer:

There is no polynomial

Step-by-step explanation:

Show polynomial