Assume that when adults with smartphones are randomly selected, 49% use them in meetings or classes. If 30 adult smartphone users are randomly selected, find the probability that exactly 23 of them use their smartphones
Answers
Answer: 0.0013684
Step-by-step explanation:
Given the following :
Probability (p) = 49% = 0.49
Number of selected adults (n) = 30
Find the probability that exactly 23 use their smartphone.
The problem is abive can be solved using the binomial probability function.
Binomial probability :
P(X = x) = [n! / x! (n-x)!] * P^x * (1 - P)^(n-x)
At x = 23
P(X = 23) = [30! / 23! (30-23)!] * P^23 * (1-0.49)^(30-23)
P(X = 23) = [30! / 23! (7)!] * 0.49^23 * (0.51)^7
P(X =23) = (2035800) × 6.72203E−10
= 0.0013684
Related Questions
cassie is placing stickers on a page that is 12 inches long and 8 inches wide the sticker are 3 inches long and 2 inches wide
Answers
Answer:
To find the greatest number of stickers Cassie can place on a page that is 11 inches long and 8 inches wide without them overlapping, we need to use the same approach as before.
Firstly, we need to calculate the maximum number of stickers that can fit along the length of the page, which is now 11 inches. Since each sticker is 3 inches long, we can fit 3 stickers along the length (11 ÷ 3 = 3 with a remainder of 2).
Next, we can calculate the maximum number of stickers that can fit along the width of the page, which is still 8 inches. Since each sticker is 2 inches wide, we can fit 4 stickers along the width (8 ÷ 2 = 4).
To ensure that the stickers do not overlap, we can only use the full row of 3 stickers from the previous calculation. Therefore, we can place 3 stickers along the length and 4 stickers along the width, giving us a maximum of 12 stickers that Cassie can place on the page without them overlapping.
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
First, find out how much stickers you can put on the long side:
12/3 = 4
Next, find out how much stickers you can put on the wide side:
8/2 = 4
Lastly, calculate them together:
4x4=16
So the answer is 16.
Write an equation of the line in slope-intercept form.
Answers
Hello and Good Morning/Afternoon
Let's take this problem step-by-step:
What does this problem want us to find:
\(\hookrightarrow \text{The slope-intercept form}: y= mx + b\)
m : slope b: y-interceptLet's find the slope:
(x₁, y₁) ⇒ 0,3)(x₂, y₂) ⇒ (4,2)\(m = \dfrac{y_2-y_1}{x_2-x_1} = \dfrac{2-3}{4-0} =-\dfrac{1}{4}\)
Let's find the y-intercept:
⇒ the value of the y-coordinate when the x-coordinate value is '0'
⇒ thus it is '3'
Our equation is:
\(y=-\dfrac{1}{4} x+3\) <===== Answer
Hope that helps!
#LearnwithBrainly
Greetings from Brasil...
One way to solve this question is through a determinant.
| X Y 1 |
| X₁ Y₁ 1 | = 0
| X₂ Y₂ 1 |
as
(X₁; Y₁) = (0; 3)
(X₂; Y₂) = (4; 2)
then
| X Y 1 |
| 0 3 1 | = 0
| 4 2 1 |
4Y + X - 12 = 0
22/39 of 3/11 plz help asap :)
Answers
Answer:
2/13
Step-by-step explanation:
To find a fraction of a fraction, you just multiply the two.
So 22/39 x 3/11 is 22x39 over 3/11
or 66/429.
Simplified would be 22/39.
The value of 22 / 39 of 3 / 11 on simplification is 6 / 39.
What is multiplication?The fundamental concept of making the same number of additions repeatedly is represented by the action of multiplication. The results of multiplying two or more integers are known as the products, and the factors that are used in the multiplication are referred to as the factors.
Given:
22 / 39 of 3 / 11
As we know of means multiplication then,
22 / 39 × 3 / 11
(22 × 3) / (39 × 11)
66 / 429
This can be simplified as,
6 / 39
To know more about multiplication:
https://brainly.com/question/1135170
#SPJ2
Can anyone help me answer these questions, PLSSSSS?
Answers
so so I have attached a picture with my
11.50 + 1.15x = 12.65
11.50 - 11.50 + 1.15x = 12.65 - 11.50
➗ 1.15x = 1.15 ➗ what does x equal? Please explain in great detail how you figured this out also replace the = with the proper inequality sign and explain how you did that as well.
Answers
Answer: the answer is x= 1
Step-by-step explanation:
So we are dealing with 11.50 - 11.50 + 1.15x = 12.65 - 11.50
our first step is Simplify both sides of the equation so:
11.5 + -11.50 + 1.15x = 12.65 + -11.50 turns into:
(1.15x) + (11.5+ -11.5)= (12.65 + -11.5)
**we know 11.5 + -11.5 will cancel each other since they are opposite**
so it will be 1.15x= 1.15
now the very last step is to divide 1.15x on both sides which gives us 1
please please answer this!
Answers
Answer: 600 cm2
Step-by-step explanation:
20*20=400
1/2(20*20)=200
400+200=600
600 cm2
Answer:
I think its (40)cm²
Step-by-step explanation:
The figure above is a triangle and it has (2O)cm on the right so the Left would be (2O)cm too. Then you multiply those to get your total which is (40)cm²
Bjorn is making aush, and he does not have enough of all the ingredients. He decides to make 5/6 of a whole recipe, which means he uses 1 1/4 L of water.
How much water is in a whole recipe?
ONLY ANSWER NO EXPLANTATION
Answers
HELP?!!!! ITS A A AND B QUESTION
Answers
Answer:
A: 80 and B: 5.5
Step-by-step explanation:
For A, just multiply 20 and 4 and which you would get 80 miles. And for B, if 1 inch is equal to 20 miles, you can divide 110 and 20 but the answer will be 5.5 rather than 5.
I think this is right but if you can, try and see if it’s correct later.
Answer:
The person who answered first is correct.
Step-by-step explanation:
I need help with this question, I'm not very good at math and all help is appreciated!
Answers
Answer:
A
Step-by-step explanation:
We can solve for H by isolating it on one side of the equation, as follows:
J/H - I/H = G
Taking H as the common denominator:
(J - I)/H = G
Multiplying both sides by H:
J - I = GH
Adding I to both sides:
J = GH + I
Dividing both sides by G:
H = (J - I)/G
So the answer is
(A)
H = (J - I)/G.
Answer: A
Step-by-step explanation:
\(\frac{J}{H} = G + \frac{I}{H}\) >Since you are solving for H bring I/H to the other side
by subtracting I/H from both sides
\(\frac{J}{H}- \frac{I}{H} = G\) >There is a common denominator so you can
combine the fractions
\(\frac{J-I}{H} = G\) >Multiply both sides by H or cross multiply whichever
way your mind things about how to get H on top
\(J-I = G(H)\) >Divide both sides by G
\(\frac{J-I}{G} = H\) >Answer is A
here are some clues
⚪. The Greatest Common Factor of 18,36 and me is 2
⚪. I am a multiple of 5.
⚪.I am greater than 18 and less than 30.
What is the mystery number????
PLEASE HELP
Answers
Complete each congruency statement and name the rule you used. If you cannot show the triangles are congruent from the given information, leave the triangles blank and write CNB for "Cannot be determined" in place of the rule.
Answers
Answer:
Step-by-step explanation:
The formula for the volume of a rectangular prism is volume = length × width × height.
Which of the following is the BEST estimate of the volume of the rectangular prism below?
A. 16 cubic units
B. 54 cubic units
C.90 cubic units
D. 120 cubic units
Answers
Answer:
C
Step-by-step explanation:
The formula to work out the volume of a rectangular prism is:
V= w*h*l
Let's plug these nums. in:
V = (2.9)(9.7)(3.4) = 95.642
The closest answer is C ~ 90 cubic units
Hope this helps :)
Michael has 26 shirts to fold. Let N be the number of shirts he would have left to fold after folding F them. Write an equation relating N to F . Then use this equation to find the number of shirts he would have left to fold after folding 23 of them.
Answers
Answer:
N = 3 F = 26
Step-by-step explanation:
If there's 26 in total and Michael has folded 3 of them N would be 3. F will be the total after folding 'N' amount left of the clothes!
For each ride, a taxi service charges an initial fee plus an additional fee based on the number of kilometers of the trip. The graph shows the cost for taxi rides. Select a true statement. The rise is 4 while the run is 2. The selection of answers are:
A: The slope is 2.1. This means that each kilometer costs $2.10.
B: The slope is 5. This means that each kilometer costs $5.
C: The y-intercept is 2.1. This means that the initial fee is $2.10.
D: The y-intercept is 5. This means that the ride lasts 5. kilometers.
Which one is right and why?
Answers
THIS MIGHT NOT BE WHAT YOU ARE LOOKING FOR AND MIGHT NOT BE CORRECT! READ FIRST!
The answer is A. The slope of the line is rise/run = 4/2 = 2.1. This means that each kilometer costs $2.10. The y-intercept is 2.1, which means that the initial fee is $2.10. So the correct statement is: The slope is 2.1. This means that each kilometer costs $2.10.
The other statements are incorrect. The slope is not 5, so each kilometer does not cost $5. The y-intercept is not 5, so the ride does not last 5 kilometers. The y-intercept is the value of the function when the input is 0, which in this case is the initial fee of $2.10.
Given the linear function -8x + 4y = 12, circle all of the following that are equivalent representations. Explain using the properties of linear functions.
A.
y = 2x + 3
B.
y = ½x + 3
C.
image
D.
image
E.
A line through the following points:
image
F.
A graph through the following points:
image
Answers
Answer:
x-intercept(s): ( 12 , 0 ) y-intercept(s): ( 0 , 3 )
Step-by-step explanation:
i Honestly dont know but these are the x and y intercepts
Consider the congruent triangles shown.
Which set of transformations can be used to prove the triangles are congruent?
A
First reflect △XYZ across the y-axis, then rotate it 90° counter-clockwise about the origin.
B
First reflect △XYZ across the y-axis, then translate it down 8 units.
C
First reflect △XYZ across the x-axis, then rotate it 90° counter-clockwise about the origin.
D
First reflect △XYZ across the x-axis, then reflect it across the y-axis.
Answers
Answer:
d. idfk what im doing on here
Help ASAP pls -screenshot-
Answers
Number 2 is 40% because 8/20=0.4
I’m almost 100% sure this is right but i could be wrong
1. 0.6
2. 40%
What is the first step for solving this problem: 12÷ 6(3)+8
Answers
Answer: The first step would be to divide 12 by 6.
Step-by-step explanation:
Answer:
Division.
Step-by-step explanation:
There are two rules that you follow. One is PEMDAS, and the other is the left -> right rule.
Note that PEMDAS =
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
The order of operation is: P , (E & R) , (M & D) , (A & S), parenthesis meaning they can be interchangeable, due to the left -> right rule.
Solve:
First, divide:
12/6 = 2
Next, multiply:
2 x 3 = 6
Finally, add:
6 + 8 = 14
14 is the answer.
Which unit of measure would be the most appropriate to measure the distance from the earth to the moon?
inch
mile
foot
yard
Answers
Answer: miles
Step-by-step explanation: the earth and the moons distance is very far. calcuating by inches would be simply a waste of time
The Earths distance from the moon is 238,900 mi.
hope this helps!!
Answer:
Mile
Step-by-step explanation:
Between the four options given mile is the largest.
If you wanted to measure something with great distance especially something in space miles would be the best option
(please help) Which formulas can you use to calculate the volume of a rectangular prism? Check all that apply. V = one-half b h V = 2l + 2w V = Bh V = lw V = lwh V = s2
Answers
Answer: v=bh
Step-by-step explanation:
Answer:
hi sorry if i am late but for me the answer is C and E
Step-by-step explanation:
im sorry if it's wrong or if it's late have a great day
The total number of hours each student spends volunteering in their community is shown in the stem-and-leaf plot.
Which statement is supported by the data in the stem-and-leaf plot?
A.
The most common number of hours volunteered is 25.
B.
The number of students who volunteered more than 30 hours is greater than the number of students who volunteered fewer than 30 hours.
C.
The number of students who volunteered between 9 and 20 hours is greater than the number of students who volunteered more than 40 hours.
D.
The most common number of hours volunteered is 42.
Answers
Answer:
C
Step-by-step explanation:
The most common number of hours volunteered is 34, so the answer can't be A or D. 7 students volunteered more than 30 hours, while 12 students did less than 30 hours, which means B is incorrect. There are 3 students that volunteered more than 40 hours and 6 that volunteered between 9 and 20 hours, which means C is correct.
Solve the equation -8(n + 7) = -88. What are two ways to start solving this equation? Choose BOTH ways.
1) Subtract 7 from both sides.
2) Use the distributive property.
3) Add 8 to both sides.
4) Add 88 to both sides.
5) Divide both sides by -8.
Answers
Answer:
Divide each side by -8
Distribute
Step-by-step explanation:
-8(n + 7) = -88.
Method 1
Divide each side by -8
n+7 = 11
Subtract 7 from each side
n = 4
Method 2
Distribute
-8n-56= -88
Add 56 to each side
-8n = -32
Divide by -8
n=4
Answer:
Distributive property & dividing -8 on both sides.
Step-by-step explanation:
You can begin solving the equation by either using the distributive property or dividing -8 on both sides.
Distributive Property:
\(-8(n+7)=-88\\-8n-56=-88\\-8n=-32\\n=4\)
Dividing:
\(-8(n+7)=-88\\n+7=11\\n=4\)
hhelp
(ill mark brainliest if correct!)
Answers
Have a nice day
Answer: Answer B is correct
Step-by-step explanation:
if u put in -2/5 in a calculator and change it to decimal form it equals -0.4
( has a photo ) Mary is planning a costume party. She spent $375.00 as shown on the graph. How much of the money was spent, to the nearest dollar, on the following items?
1) On decorations?
2) On food?
3) On party hall rental?
4) On prizes?
5) On invitations?
Use the graph below to answer problems 6-10.
( thank you for the help<3 )
Answers
Answer: $30 on decorations, $65 on food, $80 on party hall rental, $30 on prizes, and $45 on invitations.
Step-by-step explanation:
Hello! You are told that she has spent $375.00. You know she spent $40 on costumes, $30 on prizes, $65 on food, $45 on candy, $80 on party hall rental, $40 on music, and $45 on invitations. You can fill what you know in for food, party hall rental, prizes, and invitations. You still don't know how much Mary spent on decorations though. To find this information out. Add all of the amounts that you already know and subtract the total from 375 to find the remaining amount Mary spent for decorations. 30 + 65 + 45 + 80 + 40 + 40 + 45 = $345. Subtract 345 from 375. 375 - 345 = 30. Your final answer is she spent $30 on decorations. Hope this helps you out! :)
A farmer has decided to divide his land area in half in order to plant soy and corn. Calculate the area of the entire area so he knows how much soil is needed.
A parallelogram with a height of 6 yards and side length 9 yards. The height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. Rhombus is split into a soy half and a corn half.
Each bag of soil covers 20 square yards. How many bags should the farmer purchase?
Answers
Answer:
2 BAGS
Step-by-step explanation:
I did the test and got it correct good luck :D
if the baseball radius is 1.4 inches what is the circumfrance in inches
Answers
Answer:
8.8 in
Step-by-step explanation:
To find a circumference you need the diameter. To find the diameter you multiply the radius x2.
1.4x2=2.8
Tp get the circumference you multiply the diameter by pi or 3.14
The formula is \(\pi\)d
so you multiply 2.8 by pi which is=8.79645943005 or to the nearest hundredth=8.8
Answer:
area = 50.27 sq inches
circumference = 25.14 in
Step-by-step explanation:
given radius r = 4 in
area = πr² = 3.142 x 4² = 50.27 square inches
circumference = 2πr = 2 x 3.142 x 4 = 25.14 inches
i hope this work for you
Data are collected about the amount of time, in minutes, each member of the lacrosse team spends practicing. How does a single outlier change the mean of the collected data?
A single outlier causes the value of the mean to move slightly toward the outlier.
A single outlier causes the value of the mean to move slightly away from the outlier.
A single outlier does not affect the value of the mean.
A single outlier doubles the value of the mean.
The data set shows the number of homework assignments required in math classes for a month:
22
23
23
21
18
4
17
15
23
20
24
15
25
16
Which of the following statements is true based on the data set?
There is one outlier that indicates an unusually large number of assignments required in that class.
There is one outlier that indicates an unusually small number of assignments required in that class.
There are two outliers that indicate an unusually large number of assignments required in those two classes.
There are two outliers that indicate an unusually small number of assignments required in those two classes.
Answers
Answer:
1. A single outlier causes the value of the mean to move slightly away from the outlier.
2.There is one outlier that indicates an unusually small number of assignments required in that class.
Step-by-step explanation:
Can someone help me with this question!!
Answers
Answer:
8
Step-by-step explanation:
area = bh/2
32.4 yd² = 8.1 yd × s / 2
s = 8 yd
Trying to complete ASAP. You are throwing a party and have a 1-liter jar of sauce for dipping mozzarella sticks. Part A: Determine how many ounces are in 1 liter. Show every step of your work. (10 points) Part B: You need to use 2-ounce containers for your guests. How many of these containers can you fill with sauce? Show every step of your work. (2 points)
Answers
Answer:A. 33.814 ounces B. 17 containers.
Step-by-step explanation:
Since there is only 33.814 USA fluid ounces (fl. oz) A is answered.
\(\frac{33.814}{1}\) = 33.814
A. 33.814 ounces
Now that you need 2-ounce containters to fill with the 33.814 ounces (at this point you cant round to 34 ounces) how many cups do you need?
33.814/2 = 16.907 ounces (basicly 17 cups for the guests)
B. 17 containers.
Part A : The number of ounces in 1 liter is 33.814 ounces.
Part B : The number of containers that can fit the sauce is 17.
What is Unit Conversion?Unit conversion is defined as expressing the same quantity by different measurement units.
For example, a distance of 20 meter can be also expressed as 2000 cm. The distance is same.
Given that,
Amount of sauce for dipping mozzarella sticks = 1 liter
Part A :
We have the unit conversion,
1 liter = 33.814 ounces
Part B :
Measurement of containers = 2 ounces
Total amount of sauce = 33.814 ounces
We have to divide the total amount of sauce in to 2 ounce containers.
Number of containers formed = 33.814 / 2 = 16.907 ≈ 17
Hence there will be 17 containers of sauce.
Learn more about Units here :
https://brainly.com/question/19420601
#SPJ2
Referring to the figure, find the value of x
Answers
Answer:
X = 23
Step-by-step explanation:
As all the angles of a triangle = 180
3x + 3 + x + 85 = 180
4x + 88 = 180
4x = 180 - 88
4x = 92
X= 92 ÷ 4
X = 23
Hope this helped!!
I did this in geometry a few days ago