Based on a poll, 40% of adults believe in reincarnation. Assume that 8 adults are randomly selected, and find the indicated probability.
Complete parts (a) through (d) below.
a. What is the probability that exactly 7 of the selected adults believe in reincarnation?
The probability that exactly 7 of the 8 adults believe in reincarnation is
(Round to three decimal places as needed.)
Answers
Answer:
The probability under the given conditions is found:
P(7) = 0.079
Step-by-step explanation:
Let x be the number of adults who believe in reincarnation.
Adults randomly selected = 8
percentage of adult believe in reincarnation = 40% = 0.4
x follows binomial distribution:
P(x) = \(\left(\begin{array}{ccc}n\\x\end{array}\right) (p)^x(1-p)^{n-x}\)
where
n= total people random people selected = 8,
x = selected for the part = 7,
p = probability given = 0.4
P(7) = \(\left(\begin{array}{ccc}8\\7\end{array}\right) (0.4)^7(1-0.4)^{8-7}\)
P(7)= (8)(0.0164)(0.6)
P(7) = 0.07872
Rounding off to 3 decimal positions
P(7) = 0.079
Related Questions
Please help, thanks^^!
Answers
Answer:
It's 45
I hope you and everyone reading this have a nice day and, get good grades!
Answer:
Third Option
Step-by-step explanation:
\(5^2 + 20 = 25 + 20 = 45\)
The two dot plots below show the heights of some sixth graders and some seventh graders:
Two dot plots are shown one below the other. The title for the top dot plot is Sixth Graders and the title for the bottom plot is Seventh Graders. Below the line for each dot plot is written Height followed by inches in parentheses. There are markings from 52 to 57 on the top line and the bottom line at intervals of one. For the top line there are 2 dots above the first mark, 1 dot above the second mark, 1 dot above the third mark and 2 dots above the fourth mark. For the bottom line, there is 1 dot for the first mark, there is 1 dot above the second mark, there is 1 dot above the third mark, there is 1 dot above the fourth mark and there are two dots above the sixth mark.
The mean absolute deviation (MAD) for the first set of data is 1.2 and the MAD for the second set of data is 1.7. Approximately how many times the variability in the heights of the sixth graders is the variability in the heights of the seventh graders? (Round all values to the tenths place.)
1.2
1.4
2.4
2.8
Answers
Answer:
1.4 is the anwer
Step-by-step explanation:
Last one, what is the algebraic way to solve 1/5(t+2) = 5/8 ? Please provide the correct explanation :)
Answers
1/5(t+2)=5/8
First you do 1/5 times t+2
1/5t+2/5=5/8
Then you subtract 2/5 from both sides
1/5t+2/5 - 2/5 = 5/8 -2/5
Simplify that and you get
1/5t = 9/40
Divide both sides by 1/5 (multiply by the reciprocal)
And you get 9/8 or 1 1/8
I hope this helped!
Following PEMDAS
1/5*t=1/5t
1/5*2=2/5
So now we have
1/5t+2/5=5/8
To subtract fractions you need a like denominator, and the closest one between 5 and 8 is 40
So we have 16/40 and 25/40
25/40-16/40 is 9/40
So we now have
1/5t=9/40
Now divide
You get 1 and 1/8 or 1.125
Given the figure below, find the values of x and z
Answers
X= 35
Given the 2 numbers u have to divide each variable by the opposition number
Hope it helps
if you answer right ill give brainliest and 60 points
Answers
(a) 4b+5=71
(b)4b+5=71, 4b=76, b=19
B equals 19
A bag contained 18 red marbles, 14 green marbles, and 20 blue marbles. A marble was randomly pulled, the color recorded, and then put back into the bag. This table above shows the results after 25 pulls.
What was the relative frequency of selecting a red or blue marble?
Red:8
Blue8
Green9
Answers
Number of red marbles pulled = 8
Number of blue marbles pulled = 8
Total marbles pulled = 25
Relative Frequency = Total Frequency / Total number of data values
Relative Frequency of red marble = 8/25
= 32%
Relative Frequency of blue marble = 8/25
= 32%
Learn more about Relative Frequency here
Visit —
https://brainly.com/question/3857836
Hope my answer helps you✌️
Mark BRAINLIEST
help crrrrrrrrrrrrying rn
Answers
Answer:
y=2x
hope it helps
Simplify the equation
3c + 4d - 2c + 7d=
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Answer:
c+11d
Step-by-step explanation:
Is this correct? If not, please correct it, and show all work including why it’s wrong.
Answers
Answer:
a. 12
b. 1/2
Step-by-step explanation:
Given a meal has 3 choices of meat, 2 choices of fruit, and 2 choices of dessert, you want to know the number of possible meals, and the probability of a meal with no cookie for dessert.
a. PossibilitiesAs the tree diagram shows, the number of possible meals is ...
(possible meats)×(possible fruits)×(possible desserts)
= 3×2×2 = 12
There are 12 possible lunch options.
b. CookiesHalf the possible dessert choices have no cookie. That is the probability that a lunch will have no cookie:
P(no cookie) = 1/2
__
Additional comment
The bottom line of the tree diagram has 6 Cs and 6 Ms. That is, 6 of the 12 options for meals have no cookie.
<95141404393>
Solve number 12.If you have the text book it’s page #366.
Answers
Answer:
I don't know the raduis so I can't exactly sovle it for it but I can help you
Step-by-step explanation:
So I'm going to use 3 as the radius as an example but when you do it, don't use 3 unless its the radius.
So first find the area of the entire circle and to do that, you do 3.14 times 3 times 3. (a=pi*raduis sqaured) 3.14*3*3 is 28.96. So 28.96sqaured is the area of the entire circle but the question wants 1/4 of the circle's area so you divide it by 4 which gets you 7.065. Rounded up since 6 is over 5 and that would be 7.1. The area of 1/4 a circle of the example I gave is 7.1 sqaured.
This is not the answer to your question btw this is an example since I do not know what the radius for your question is.
What you have to do is 3.14 times(the radius) times(the raduis). When you get your answer divide that by 4 so you get 1/4 of the area since that's what the question is asking.
Hope this helps and if you can tell me the radius, I can help you sovle it:)
If the radius is 1.3 then the answer should be 1.3 sqaured. The exact answer is 1.32665 if you need that instead
What is the quotient?
x-1/7x2-3x-9
Answers
=2x-10
i need help with 2 of these math question
Answers
Answer:
first one is 10 and second one is 18 but that isnt an option so just do 17
Step-by-step explanation:
Help please i'm getting mad because i don't understand, and again. Thank you if you answered. PLEASE HURRY!!!
Answers
E 3/4 pounds = 6/8 and 3 packages
of 1 1/8 were purchased to the 6/8 so therefor 3 times
D All packages weigh kore than 1/2 pound since 1/2=4/8 and smallest packages was 5/8 so therefor greater than 4/8
Answer:
D and E are the correct answers
Step-by-step explanation:
A is false: The difference between the greatest and least weights is NOT 1/2.
B is false: 2/9 of the packages weigh 5/8 pounds...not 1/4.
C is false: You can clearly see there were more than 12 packages purchased.
D is true: 3/4 = 6/8 and there is 1 package that weighs 6/8 pounds 1 x 3=3 and there is a total of 3 packages that weigh 1 1/8 pounds.
E is true: 1/2=4/8 and the smallest amount is 5/8 pounds which is over 1/2 pound.
~ Please mark me as brainliest :)
Find the missing value: 49, 35, 32, 41, x when the mean is 41.
Answers
Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.
What is the mean number of minutes spent on the phone?
Answers
Explanation:
The data from the stem-and-leaf plot is:
10,
24,25,26,
30,30,32,33,
40,45,46
Add up those values
10+24+25+26+30+30+32+33+40+45+46 = 341
Then divide over n = 11 which is the sample size.
341/11 = 31 is the arithmetic mean.
Answer:
341/11 = 31 is the arithmetic mean.
Step-by-step explanation:
Sid has a baseball cap collection. 65% of his caps have sports team symbols. If 26 of the caps have the team symbols, how many total caps does Sid have?
39
40
73
91
Answers
B. 40
As we know Sid has 26 Caps
we also know that 26 is 65% of total
so let total caps = x
to calculate x
we know that percent = (Values*100)/total Values.......... i
and here Value = 26 caps
percentage = 65
So we have
65 = (26*100)/x---------------- (As we know that per = fraction*100)..... from i
65x= 2600x = 2600/65x=40 capsHence Answer is 40
Learn more about percentages: https://brainly.com/question/24877689
It takes 17 seconds for a train to pass a 206-meter long bridge at normal speed. It takes 45 seconds for the same train to pass 170-meter long bridge at one-third of the normal speed. What is the length of the train in meters?
Answers
Answer:hello
Step-by-step explanation:sync bien
- L = length of the train in meters
- v = speed of the train in meters per second (normal speed)
- t1 = time taken by the train to pass the 206-meter long bridge at normal speed
- t2 = time taken by the train to pass the 170-meter long bridge at one-third of the normal speed
From the problem statement, we have two equations involving these variables:
Equation 1: L + 206 = v * t1
Equation 2: L + 170 = (1/3)*v * t2
We can solve this system of equations for L by eliminating v. To do this, we can rearrange Equation 1 to solve for v:
v = (L + 206) / t1
Then, we can substitute this expression for v into Equation 2:
L + 170 = (1/3)*[(L + 206) / t1] * t2
Multiplying both sides by 3*t1 and simplifying, we get:
3*L*t1 + 3*170*t1 = (L + 206)*t2
Expanding the right-hand side and simplifying, we get:
3*L*t1 + 510 = L*t2 + 206*t2
Now, we can solve for L by rearranging terms and simplifying:
L = (206*t2 - 3*170*t1) / (3*t1 - t2)
Substituting the given values, we get:
L = (206*45 - 3*170*17) / (3*17 - 45) = 510
The length of the train is 510 meters.
PLSSS help, i will give BRAINLIEST!!!
Answers
Answer:
3x(2x -3)
Step-by-step explanation:
Simplifying the expression:
6x² - 9x
6x² = 2 * 3 * x * x
9x = 3 * 3 *x
Common factor = 3x
Take out the common factor from both the term.
6x² - 9x = (3x * 2x) - (3x * 3)
= 3x * (2x - 3)
2(x-4)+3=7 which of these is x 4,6,7,8
Answers
Answer:
it would be 4
Step-by-step explanation:
I need answers and to fill in the blanks, I'm sorry if this is a little amount but here's 15 points
Answers
Answer:
why thank you!
Step-by-step explanation:
but if you need help I'm here
Answer:
Step-by-step explanation:
What is the height of the cone below?
Answers
First, find the area of the base. (Area = pi r-squared)
5=3.14 r-squared
5/3.14=r-squared
1.59=r-squared
R=1.26
Then use the radius to find the height. (V=pi r-squared h/3)
45=3.14x1.26x1.26x h/3
9=h/3
9x3=h
H=27
Which pair of points forms a vertical line segment that is 4 units long? A. (–3, 5) and (–7, 5) B. (3, –8) and (3, –4) C. (2, 1) and (2, 3) D. (2, 4) and (–2, 4)
Answers
Answer: (-7,5) and (-3,5) :) there for answer is A
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
Help me please. I'm very bad at math and Need help
Answers
Answer:
sure, what do you need help with?
What do you need help with
A computer store buys a computer system at a cost of $370.80. Then selling price was first at $618, but then the store advertised a 20% markdown on the system. Answer part A and then I give you part B.
Answers
Answer:
The answer is 494.40$
Step-by-step explanation:
618*80=49440
49440/100=494.40
3:Last year a fishing license cost $52.00. This year the license will cost $27.04. This is a ____ percent decrease.
Answers
Answer:
48% decrease
Step-by-step explanation:
Original cost subtract new cost
52-27.04
24.96
Divide by original cost
24.96 / 52
0.48
Change to percent form
48%
48% decrease
Could anyone help me with this problem, Quickly Please...
Answers
Answer:
3/4
Step-by-step explanation:
Since (p, r) lies on the line y = x + b,
we have,
r = p + b -----eq(1)
Since (2p, 5r) lies on the line y = 2x + b,
we have,
5r = 2(2p) + b -----eq(2)
Sub the value of r from eq(1) in eq(2),
5(p + b) = 4p + b
⇒ 5p + 5b = 4p + b
⇒ 5b - b = 4p - 5p
⇒ 4b = -p
⇒ b = -p/4
sub in eq(1)
r = p + (-p/4)
= p - p/4
= 3p/4
⇒ r = 3p/4
⇒ r/p = 3/4
Answer:
3/4
Step-by-step explanation:
We have two lines:
r = p + b eq(1)
5r = 4p + b eq(2)
eq(2) - eq(1)
4r = 3p
dividing by 4p
r/p = 3/4
A stadium has seats that are arranged into sections. In each section, the seats
are arranged into rows. There are 11
sections, 7 rows in each section, and 10
seats in each row. As a baseball game
in the stadium, all of the seats are
occupied. A seat will be chosen at
random and a price will be awarded to
the person sitting in that seat. If Hoda is
sitting in one of the seats, what is the
probability that she will win the price?
Answers
Answer:
1/770
Step-by-step explanation:
7x10x11=770 he is sitting in one seat so 1/770 she will win.
Please help me. X/6 ≥ 7. I also need to know how this would be graphed thank you.
Answers
Answer: The inequality solves to x ≥ 42
The graph is shown below
==================================================
Explanation:
We have some unknown number x, and we're dividing by 6 to form the fraction x/6. That result is 7 or larger which means we write x/6 ≥ 7
To solve for x, we undo the division. We'll multiply both sides by 6. That's how we get to x ≥ 42
The graph will involve a number line. Plot a closed filled in circle at 42 on the number line. Shade to the right. This visually represents any number that is 42 or larger. The endpoint 42 itself is included in the solution set.
Side note: We would use an open circle if we didn't have the "or equal to" portion for the inequality sign.
Answer:
The inequality solves to x ≥ 42
The graph is shown below
==================================================
Step-by-step explanation:
We have some unknown number x, and we're dividing by 6 to form the fraction x/6. That result is 7 or larger which means we write x/6 ≥ 7
To solve for x, we undo the division. We'll multiply both sides by 6. That's how we get to x ≥ 42
The graph will involve a number line. Plot a closed filled in circle at 42 on the number line. Shade to the right. This visually represents any number that is 42 or larger. The endpoint 42 itself is included in the solution set.
Side note: We would use an open circle if we didn't have the "or equal to" portion for the inequality sign.
Step-by-step explanation:
The coordinates of point P are (−3, 4). What are the coordinates of the point that is a reflection of point P over the y-axis? (−3, −4) (−4, −3) (3, 4) (4, 3)
Answers
Answer:
3,4
Step-by-step explanation:
The point -3,4 reflected over the y is oppposite x same y
Someone help me with this ASAP!
Answers
Answer:
48.1 somewhere around 36 and 57
Step-by-step explanation:
Answer:
36-57
Step-by-step explanation:
18.50 x 2.6 = 48.10, which is between those two numbers