Kyle has 18 purple balls and 2 black balls in a bag. Kyle takes one ball at random from the bag, puts it back, and takes another ball from the bag. A tree diagram is drawn to represent this information. 18 20 18 20 purple 2 20 not purple 2 20 Submit Answer 18 20 2 20 purple not purple purple not purple Find the probability that Kyle takes at least one purple ball.​

Answer:

\(z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615\)  

The p value for this case would be:

\(p_v =2*P(z<-0.615)=0.539\)  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

Step-by-step explanation:

Information given

n=100 represent the random sample taken

X=36 represent the number of people that take E supplement

\(\hat p=\frac{36}{100}=0.36\) estimated proportion of people who take R supplement

\(p_o=0.39\) is the value that we want to test

\(\alpha=0.05\) represent the significance level

z would represent the statistic

\(p_v\) represent the p value

Hypothesis to test

We want to test if the true proportion is equatl to 0.39 or not, the system of hypothesis are.:  

Null hypothesis:\(p=0.39\)  

Alternative hypothesis:\(p \neq 0.39\)  

The statistic is given by:

\(z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}\) (1)  

Replacing the info we got:

\(z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615\)  

The p value for this case would be:

\(p_v =2*P(z<-0.615)=0.539\)  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

Answer:

1. 63 or

2. 37.8

step-by-step explanation:

1. $125,$78, $66, $45, $13 take out $125 and $13 then add $78, $66, $45 and you get $189 then divided by 3 and you $63

2.$125,$78, $66, $45, $13 take out $125 and $13 then add $78, $66, $45 and you get $189 then divided by 5 and you $37.8

Answer:

ITS 63

Step-by-step explanation:

JUST DID DA TEST CUZ

The x-intercepts represent a zero profit, the maximum value of the graph represents the maximum profit, An approximate average rate of change of the graph from x=3  to x=5 represents the reduction in profit from 3 to 5 and the domain is constrained by x=0.

Part A:

The x-intercepts represent a zero profit.

The maximum value of the graph represents the maximum profit.

The function increases up till the vertex and decreases after it.

This means that the profit increases as it reaches the peak at the vertex.

It decreases after the vertex up till it reaches zero.

On the left of the first zero and on the right of the second zero, the profits are negative.

Part B:

An approximate average rate of change of the graph from x=3  to x=5 represents the reduction in profit from 3 to 5.

Part C:

Simply, the domain is constrained by x=0.

We are obliged at x=6 .

This is because we have to avoid a negative profit.

To learn more on Graph click:

https://brainly.com/question/17267403

#SPJ1

the shape of the resulting two-dimensional cross section is  A- RECTANGLE.

A right rectangular prism, also known as a rectangular cuboid, is a three-dimensional geometric figure that has six faces, all of which are rectangles. The faces of a right rectangular prism are arranged in pairs such that each pair of opposite faces has the same dimensions and is parallel to the other.

The shape of the resulting two-dimensional cross section of a right rectangular prism sliced perpendicular to its base will always be a rectangle.

This is because a rectangular prism has a rectangular base and all the cross sections perpendicular to the base will have the same shape as the base, which is a rectangle.

Therefore, the correct answer is A- RECTANGLE.

To know more about cuboid, visit:

https://brainly.com/question/29568631

#SPJ1

The attached diagram represents the required line plot

From the table, we have the following frequency table:

Minutes spent           Frequency

25                                     1

25 1/2                                2

26                                     1

27 1/2                                 1

27 3/4                                1

28 1/4                                1

28 1/2                                2

29                                     1

Total                                10

Using the above frequency table, we can now plot the line plot

See attachment for the line plot

Read more about line plots at:

https://brainly.com/question/21862696

#SPJ1

The time Jack left Santa Clara is 1 : 55 pm

A word problem in math is a math question written as one sentence or more. These statements are interpreted into mathematical equation or expression.

The time for Jack to walk to lose Altos is 25 min and he uses another 25mins to work to Palo alto.

Therefore, the total time he spent is

25mins + 25 mins = 50 mins

He arrived Palo at 2 :45 pm, therefore the time he left Santa Clare will be ;

2:45 pm = 14 :45

= 14:45 - 50mins

= 13:55

= 1 : 55pm

Therefore he left at 1:55 pm

learn more about word problem from

https://brainly.com/question/21405634

#SPJ1

Using the triangular inequalities we can get:

7/4 < x < 11/2

The image of the triangle is in the image at the end.

A triangle with sides A, B, and C must meet the triangular inequality, it says that the sum of any two sides is larger than the other side.

Now, see the triangle attached at the end, the triangular inequalities say that:

18 + 6x > 2x + 4

18 + 2x + 4 > 6x

6x + 2x + 4 > 18

Now simplify these, for each one we will get:

4x > -14 -----> x > -7/2

22 > 4x -----> 11/2 > x

8x > 14 -----> x > 7/4

Using the second two we can get:

7/4 < x < 11/2

Learn more about triangles at:

https://brainly.com/question/2217700

#SPJ1

Answer:

D. its a two dimensional object

Answer:

A. It is a polygon

C. It is a one-dimensional object

The shape is a polygon in two dimensions since a polygon must have at least three straight sides.

Answer:

40

Step-by-step explanation:

\(8=2^3 \\ \\ 20=2^2 \times 5 \\ \\ \lcm(8,20)=2^3 \times 5=40\)

Answer:

22° + m<C = 90°

Step-by-step explanation:

We are given that <A (which is equal to 22°) and <B are vertical angles, and that <B is complementary to <C.

We want to write an equation that will help us solve <C.

Recall that vertical angles are congruent by vertical angles theorem.

This means that <A ≅ <B; it also means that the measure of <B is also 22°.

Also recall that complementary angles add up to 90°.

This means that m<B + m<C = 90°.

Since we deduced that m<B is 22°, we can substitute that value into the equation.

Hence, an equation that can be used to solve for <C is:

22° + m<C = 90°

The original side length of the square is 6 inches.

Let's say that the original side length is S, then the original area is:

A = S²

If we cut 3 inches of the side length, then the new area is:

a = (S - 3)²

And this is 1/4 of the original area, so we can write the equation:

(S - 3)² = (1/4)*S²

Expanding it we will get:

S² - 6S + 9 = (1/4)*S²

4S² - 24S + 36 = S²

3S² - 24S + 36 = 0

So we have a quadratic equation to solve

Using the quadratic formula we will get:

\(S = \frac{24 \pm \sqrt{(-24)^2 - 4*3*36} }{2*3} \\\\S = \frac{24 \pm 12}{6}\)

The positive answer is the one that makes sense (we could not take 3 inches if we take the other one)

S = (24 + 12)/6 = 6

The original side length is 6 inches.

Learn more about quadratic equations at:

https://brainly.com/question/1214333

#SPJ1

to find GCF

factor:

9: 1, 3, 9

27: 1, 3, 9, 27

GCF = 9

prime factorization

9: 3 x 3

27: 3 x 3 x 3

GCF = 3² = 9

Answer:

they're equal

Step-by-step explanation:

Answer:

Step-by-step explanation:

U={x|x∈N and x<10}

or U={1,2,3,4,5,6,7,8,9}

B={x|x∈N and x is even and x<10}

or

B={2,4,6,8}

C={x|x∈N and x<10}

or

C={1,2,3,4,5,6,7,8,9}

(B∩C)={2,4,6,8}

(B∩C)'={1,3,5,7,9}

We are asked to identify which properties of exponent to apply in order to reduce the expression:

This is the property associated with negative exponents that include the fact that we are dealing with a division:

This is the negative exponent property, so for our case we write;

SO find the property I am higlighting in the image below:

The sum of normally distributed random variables is also a normally distributed random variable.

Given \(n\) random variables with \(X_i\sim\mathrm{Normal}(\mu_i,\sigma_i^2)\), their sum is

\(\displaystyle\sum_{i=1}^n X_i \sim \mathrm{Normal}\left(\sum_{i=1}^n \mu_i, \sum_{i=1}^n \sigma_i^2\right)\)

i.e. normally distributed with mean and variance equal to the sums of the means and variances of the \(X_i\).

In this case, each of \(X_1,X_2,X_3\) are normally distributed with \(\mu=4\) and \(\sigma^2\) = ... I'm not sure what you meant for the variance, so I'll keep it symbolic. Then

\(V = X_1+X_2+X_3 \sim \mathrm{Normal}(12, 3\sigma^2)\)

Answer:

no

oligopolistic firms are like cats in a bag

they arises when small number of large firms have all or most of the sale

If a good or service has only one seller it is called monopoly

Answer:

Do you ask G or H?I answered two G=34° ,H=34°

Answer:

3 blue squares and 6 white squares

Step-by-step explanation:

1 x 3 = 3

2 x 3 = 6

The answer is 3 to 6.

3 to 6 can be represented by 3 blue squares and 6 white squares.

Answer:

It is the last one. Hope this helps (:

Step-by-step explanation:

The statement which is true about the quadrilateral is D. Some rhombuses have four right angles.

Quadrilaterals are four sided polygons which also have four vertices and four angles.

Sum of all the interior angles of a quadrilateral is 360 degrees.

Rectangles, squares, trapezium, parallelogram, rhombus are all quadrilaterals.

A. All squares are rectangles but all rectangles are not squares, since for squares, all sides need to be equal.

But for a rectangle, opposite sides only need to be equal.

B. A rhombus has all the sides equal and opposite sides are parallel.

So there are 2 pairs of parallel sides.

C. A trapezoid can have only one pair of sides parallel.

D. Some rhombuses have four right angles.

This is true since square is a rhombus and it has 4 right angles.

Hence the true option is D.

Learn more about Quadrilaterals here :

https://brainly.com/question/29934440

#SPJ1

Step-by-step explanation:

\(y = 3x + 10......eq3 \\ 2(3x + 10) = 6x + 20 \\ 6x + 20 = 6x + 20\)

you can see that coming across that complication where the eqaution is balanced there is no solution for x and y fir those systems of equations.

Answer:

2

Step-by-step explanation:

\(-1=2y-5 \\ \\ 4=2y \\ \\ y=2\)

Answer:

2  3

Step-by-step explanation:

Answer:

It's in the attachment

hope it helps...

have a great day!!

Answer:

B

Step-by-step explanation:

Answer:

Step-by-step explanation:

i am working on the assumption that nobody does all three of them

i got 4 because including the people that do swimming and park, the total number of people that do swimming is 22.

the same logic goes for cycling: including the people that do swimming and visit the national park, the total is 23.

so that means that find how many people do swimming and cycling, we have to add the people doing only swimming, with the people doing both swimming and park and then subtract that answer from 22 which gives you 4

Step-by-step explanation: in the picture

please give me a brainliest answer

If the random variable x is normally distributed with a mean equal to 0.45 and a standard deviation equal to 0.40, then P(x ≥ .75) is 0.9227.

A z-score describes the position of a raw score in terms of its distance from the mean when measured in standard deviation units. The z-score is positive if the value lies above the mean and negative if it lies below the mean.

Given the problem above, we need to find what the z-score is when P(x ≥ .75).

The formula for calculating a z-score is given by:

\(Z=\dfrac{\text{x}-\mu}{\sigma}\)

Where:

Now,

\(Z=\dfrac{\text{x}-\mu}{\sigma}\)

\(Z=P(\text{x} \geq 0.75) = \huge \text(\dfrac{P(Z \geq (0.75 - 0.45)}{0.40}\huge \text)\)

\(Z= P\huge \text (\dfrac{Z \geq0.30}{0.40}\huge \text)\)

\(Z=P(Z \geq 0.75) = 1 - P(Z < 0.75)\)

\(Z=1 - 0.077337\)

\(Z\thickapprox 0.9227\)

Therefore, the z-score of P(x ≥ .75) is 0.9227.

Learn more about the z-score at:

https://brainly.com/question/31871890