Consider randomly drawing two students without replacement from a class of 40 students in which 3 are left handed. Below is a tree diagram illustrating that the probability of selecting 2 left handed students is 1/260. Calculate the probabilities labeled on the tree diagram

Consider Randomly Drawing Two Students Without Replacement From A Class Of 40 Students In Which 3 Are

Answers

Answer 1

Answer:

a. 3/40

b. 37/40

c. 2/39

d. 37/39

e. 3/39

h. 36/39

k. 1/260

m. 37/520

n. 37/520

w. 111/130

Step-by-step explanation:

First person:

a. 3/40

b. 37/40

_____

Second person:

left-handed branch of tree diagram: since the first person was left-handed, it means there is one less left-handed person, and one less person for the total

c. 2/39

d. 37/39

not left-handed branch of tree diagram: since the first person wasn't left-handed, there are still 3 left-handed people, and there is one less person for the total.

e. 3/39

h. 36/39

_____

for the final probabilities, just multiply along the tree branches:

k = a × c = 1/260

m = a × d = 37/520

n = b × e = 37/520

w = b × h = 111/130


Related Questions

HELP PLEASE ASAP!!! PLEASE AND THANKS

Answers

Answer:

x >= 12

Step-by-step explanation:

2x + 7 <= 3x - 5

7 + 5 <= 3x - 2x

12 <= X

PLEASE HELP
What is the y-intercept for line c?

Enter your answer in the box.

Answers

Answer:

-5

Step-by-step explanation:

Can someone solve this equation.

Answers

Answer:

1/2

Step-by-step explanation:

A sample of 2,000 union members was selected, and a survey recorded their opinions regarding a proposed management union contract. A total of 1,600 members were in favor of it. A 95% confidence interval estimated that the population proportion was between 0.78 and 0.82. This indicates that about 80 out of 100 similarly constructed intervals would include the population proportion.

a. True
b. False

Answers

Answer:

a

Step-by-step explanation:

True, the 95% confidence interval suggests that there is a high likelihood (about 80 out of 100 intervals) that the true population proportion of union members in favor of the proposed management union contract falls between 0.78 and 0.82.

The confidence interval estimated for the population proportion of union members in favor of the proposed management union contract was between 0.78 and 0.82, with a confidence level of 95%.

The confidence level represents the probability that the interval contains the true population parameter.

In this case, with a confidence level of 95%, it means that if we were to repeat the survey and construct 100 similar confidence intervals, approximately 95 of those intervals would contain the true population proportion.

Therefore, when it is stated that "about 80 out of 100 similarly constructed intervals would include the population proportion," it means that the estimated confidence interval aligns with the confidence level of 95%, indicating that approximately 80% of those intervals would contain the true population proportion.

To learn more on Statistics click:

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#SPJ2

A line passes through the points (−6,−8) and (−3,−7). What is the equation of the line in Slope-Intercept Form?

Answers

First, solve for slope:
-7 - -8 = 1
-3 - -6 = 3
1/3 = m

Next, plug in one of your points into
y = (1/3) x + b
-7 = -1 + b
-6 = b

Answer:
y = (1/3)x-6

I went to the movies and bought 4 tickets. It cost me 23 dollars for the tickets after I applied my 5 dollar Tuesday discount. Create an equation for this situation where x is cost of each ticket. How much did each ticket cost? (answer asap pls)

Answers

Answer:

x= 5.75$

Step-by-step explanation:

23 divided by 4 = 5.75$ (without the discount it is 10.75$)

Answer:

each ticket=$7.

x=7

Step-by-step explanation:

The total price of your tickets AFTER applying your $5 discount was 23.

Therefore, the price of 4 tickets would be 23+5, aka 28.

We can first begin with,

4x-5=23

4x=23+5

4x=28

x=7.

If (1 + 2x)^5+ (1 - 2x)^5 = a + bx + cx?
find the values of the constants a, b and c.

Answers

Answer:

steps below

Step-by-step explanation:

5th level of Pascal triangle: 1,5,10,10,5,1

(1+2x)⁵ = 1*1⁵*(2x)⁰+5*1⁴*2x+10*1³*(2x)²+10*1²*(2x)³+5*1¹(2x)⁴+1*1⁰*(2x)⁵

           = 1 + 10x + 40x² + 80x³ + 80x⁴ + 32x⁵   .. (1)

(1-2x)⁵ =  1  - 10x + 40x² - 80x³  + 80x⁴ - 32x⁵  .. (2)

(1)+(2): (1+2x)⁵ + (1-2x)⁵ = 160x⁴ + 80x² +2

a + bx + cx ?? suppose it's ax⁴ + bx² + cx, if you have other set up.. adjust by yourself

a = 160,    b = 80,    c = 2

Can you help me find x
8th grade math

Answers

Answer:

x=53

Step-by-step explanation:

all triangles equal 180° the little lines on each side mean both sides are same length so all u gotta do is

180-74=106

106/2= 53

Answer:x=52

180-74=104

104 divided by 2 to get 52

Step-by-step explanation: you would have to divide because both sides are the same size so they would be even. so that is how you would get the answer 52

Please help due in 2 hours and I’m clueless.

Identify the domain and range of each graph.


Answers

So all u have to do is say all the x values that have a point (the domain) and all the y values that have a point (the range). If it is continuous, like a line, then u say all the points between two points. For example the range of the bottom right is [-1,5]. If it goes to infinity or negative infinity, you say something like (-infinity,infinity). With the sideways 8 of course. Btw, (-infinity, infinity) is the domain of the bottom right ;D

Solve for B
A=3B+4C
B=?​

Answers

Answer:

[tex]3b + 4c = a[/tex]

[tex]3b = a - 4c[/tex]

[tex] \frac{3b}{3} = \frac{a}{3} + \frac{ - 4}{3} [/tex]

[tex] \frac{3b}{3} = \frac{a}{3} + \frac{ - 4c}{3} [/tex]

[tex]b = \frac{a}{3} + \frac{ - 4c}{3} [/tex]

[tex]b = \frac{a}{3} - \frac{4c}{3} [/tex]

Step-by-step explanation:

Thanks!!!!!

What is the length of the hypotenuse? If necessary, round to the nearest tenth.

Answers

Answer:

,a hypotenuse is the longest side of a right-angled triangle, the side opposite the right angle. 

the ratio of yellow balls to green balls in a a bag is 4:2
what faction of the balls are yellow?

Answers

4/6
= 2/3

As we take total and divide by what we looking for

.

Answer: for every 1 green ball there is 2 yellow balls so 75% yellow 25% green I think unless I’m wrong which I wouldn’t be surprised

Step-by-step explanation:

Find x if the base angles of an isosceles triangle are 61 degrees and 7x+19.

Answers

The question provides the measures of two angles, (one of which contains

a variable), and the relationship between the angles.

The value of x is 6 degrees

Reason:

The given parameters are;

The base angles of the isosceles triangles are; 61° and (7·x + 19)°

Required:

To find the value of x

Solution:

By definition of an isosceles triangle, we have;

The base angles of an isosceles triangle are equal, therefore;

(7·x + 19) = 61

Which gives;

[tex]x = \dfrac{61 - 19}{7} = 6[/tex]

The value of x = 6

Learn more here:

https://brainly.com/question/16350203

What is 2/7 ÷ 4/5 ? Plz help

Answers

Answer:

5/14

Step-by-step explanation:


[tex]5x - 3(2x - 4)[/tex]
please help me​

Answers

(-x -12)

-3 distributed into the parenthesis and then combine like terms

Which expression is equivalent to 8(4p+1)+6?

Answers

Answer:

32p + 14

Step-by-step explanation:

Expression :-

8(4p +1) + 6 .

Simplify ,

32p + 8 + 6 32p + 14

Which of the following best describes the number shown below?
0.535353...

A.
rational
B.
irrational
C.
both rational and irrational
D.
neither rational nor irrational

Answers

Answer:

irrational

Step-by-step explanation:

irrational. An irration number can not be expressed as a fraction or a decimal. This can not because this number goes on forever and it will never end, and you can write a never ending number as a fraction or a decimal. here is a tip to remember if a number never end like pi then it is irrational,

if m<4= 86° what are the measures of the other seven angles in the figure

Answers

Answer:

below

Step-by-step explanation:

IF l₁ and l₂ are parallel, then:

Angles 2, 4, 5, 8 all equal 86 degrees

Then angles 1, 6, 3 , 8 all equal 180 - 86 which is 94 degrees

Yep I think he’s Solvinf it

Which fraction equals a repeating decimal 3/10 6/12 1/3 3/4

Answers

Answer:

1/3

Step-by-step explanation:

because 1/3 is 0.333333

The difference of thirteen and a number.

Answers

Answer:

13-n

Step-by-step explanation:

n represents the number

Jerry took his extended family out for a dinner that cost $480. Jerry paid 5% sales tax and left a 20% tip on $480. What was the total cost?

Answers

So you add 480 plus 24 in sales tax then you add 96 for the tip and if you add them all together you should get 600$

The amount of the sales tax and tip is $96 and $24, then the total cost of the dinner will be $600.

What is the percentage?

The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.

Jerry took his extended family out for a dinner that cost $480. Jerry paid 5% sales tax and left a 20% tip on $480.

Then the cost of the sales tax will be

→ 0.05 × 480 = $24

Then the amount of the tip will be

→ 0.20 × 480 = $96

Then the total cost of the dinner will be

→ $24 + $96 + $480 = $600

More about the percentage link is given below.

https://brainly.com/question/8011401

a
=
670
rounded to the nearest 10
b
=
72.7
rounded to 1 DP
Find the minimum (to 2 DP) of
a
÷
b

Answers

Answer:9.22

First, 670 rounded to the nearest ten is:

670

Second, 72.7 rounded to 1DP is:

well, 72.7

a÷b is:

9.2159

9.22 (2 DP)

please help!! please show your work too so i know how to do the rest of them :)

Answers

Answer:

Step-by-step explanation:

1) f(x)=1/3(x+1)^2

so if we use the equation f(x)=a(x-h)^2+k then we can plug in the different things.  a would represent the compress/stretches, so in order to move horizontally, we would need to do 1/3

for h: that is the horizontal translations so, left and right. BUT remember it's the opposite. so if you want to go left <-- you would have to put a + sign and to go right you would have to put a - sign.

I hope that helps it prob is confusing sorry >-<

What is the solution to the linear equation?

4b + 6 = 2 – b + 4

b = –2
b = 0
b = 4
b = 6

Answers

Answer:

b = 0

Step-by-step explanation:

4b + 6 = 2 - b + 4

4b + b = 2 + 4 - 6

5b = 6 - 6

5b = 0

b = 0 / 5

b = 0

Answer:

The answer is B.

Step-by-step explanation:

b=0

What are the values of v and w?

Answers

W is 61 because both sides are the same, the two lower angles are the same.

Then 3 angles equal 180.

61 + 61 + v = 180

122 + v = 180 (subtract 122)

V = 58

ALL FELLOW PEOPLE I NEED HELP ASAP ! WILL MARK BRAINLIEST!!EXTRA POINTS !!!!

Answers

Answer:

Question 1:

A) Perpendicular

Question 2:

B) y = -8 and y = 2

What is the x intercept of this quadratic/parabola?

Answers

Answer:

-3 and 1

Step-by-step explanation:

Answer: Yes, -3 and 1

Step-by-step explanation:

If you look at the x axis there are 2 points which are -3 and 1. Since they are on the x axis they are your intercepts. Hope this helps! :)

A person walked 19km in 2.0 hr. What is the person’s average velocity in km/he and in m/sec?

Answers

Answer:

9.5km/hr and 16.667m/s

Step-by-step explanation:

velocity = Distance / Time

v = 19/2  -->  v = 9.5km/hr

v = 2000m/120s --> v = 16.66666667m/s

If 2 coins can be exchanged for 3.3782 dubloons, how many dubloons can be obtained for 9 coins?

(Round to the nearest hundredth)

Answers

Answer:

5.33

Hope this helps

Solve the math problem

Answers

Thats too many questions mam Step-by-step explanation:

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