​A random sample of n1 = 16 communities in western Kansas gave the following information for people under 25 years of age.
​

x1: Rate of hay fever per 1000 population for people under 25

​

​144 89 119 119 125 136 91 109 111 108 116 123 120 121 115 123

​

A random sample of n2 = 14 regions in western Kansas gave the following information for people over 50 years old.

​

x2: Rate of hay fever per 1000 population for people over 50

​

​109 109 90 81 85 94 92 106 110 89 87 94 100 90

​

Assume that the hay fever rate in each age group has an approximately normal distribution. Do the data indicate that the age group over 50 has a lower rate of hay fever? Use α =0.05. If , will you reject or fail to reject the null hypothesis? Are the data statistically significant at confidence level α?

​​

a
​Since the P-value is less than the level of significance, the data are statistically significant. Thus, we fail to reject the null hypothesis.
b
​Since the P-value is greater than the level of significance, the data are statistically significant. Thus, we reject the null hypothesis.
c
​Since the P-value is less than the level of significance, the data are not statistically significant. Thus, we reject the null hypothesis.
d
​Since the P-value is less than the level of significance, the data are not statistically significant. Thus, we fail to reject the null hypothesis.
e
​Since the P-value is less than the level of significance, the data are statistically significant. Thus, we reject the null hypothesis.

Answer:

[tex]a = \frac{1}{2} [/tex]

[tex]b = 0[/tex]

Step-by-step explanation:

[tex]a - b = \frac{1}{2} \\ a + b = \frac{1}{2} \\ \\ a - b + a + b = \frac{1}{2} + \frac{1}{2} \\ a + a = \frac{2}{2} \\ 2a = 1 \\ \frac{2a}{2} = \frac{1}{2} \\ a = \frac{1}{2} [/tex]

[tex]a + b = \frac{1}{2} \\ \frac{1}{2} + b = \frac{1}{2} \\ b = \frac{1}{2} - \frac{1}{2} \\ b = 0[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!!

Answer:

a = - 2, b = 4, c = - 3

Step-by-step explanation:

The standard form of a quadratic equation is

ax² + bx + c = 0 ( a ≠ 0 )

Compare  - 2x² + 4x - 3 = 0 to the standard, giving

a = - 2, b = 4, c = - 3

Answer:

See below in bold.

Step-by-step explanation:

-2x^2 + 4x  - 3 = 0     Compare this with the standard form:

ax^2  + bx + c = 0

We see that a = -2, b = 4 and c = -3.

Answer:

Option 3 y=ex-3 hoping this helps

The answer is A.

I used a graphing calculator.

Answer:

the first one

Step-by-step explanation:

slope: use rise-over-run theorem. the slope of the graph rises -2 for every 1 unit over, so slope is -2x

intercept: the line crosses the y-axis at y=3, hence +3

put it together: y=-2x+3

Answer:

9

plz mark brainliest

Step-by-step explanation:

Answer: 9

Step-by-step explanation: 2 negative numbers become a positive number when multiplied or divided..... so when we multiply both of these negative numbers (or just do 2 times 4.5) your answer will be 9

Answer:

Step-by-step explanation:

Area of circle = πr²  = 15 m²

Volume of Cylinder = πr²h

                                = 15 * 3

                                = 45 m³

Volume of Cone = (1/3)πr²h

[tex]=\frac{1}{3}*15*3\\\\[/tex]

= 15 m³

Answer:

1.) Verb phrase

2.) Noun phrase

3.) Adverbial phrase

Answer:

g(n) = [tex]\frac{11+5n}{3}[/tex]

Step-by-step explanation:

Given

3m - 5n = 11

Rearrange making m the subject

Add 5n to both sides

3m = 11 + 5n ( divide both sides by 3 )

m = [tex]\frac{11+5n}{3}[/tex] , thus

m = g(n) = [tex]\frac{11+5n}{3}[/tex]

Answer:

Mark makes $12 an hour. Steven makes $15 an hour.

Step-by-step explanation:

s = steven's hourly pay

m = mark's hourly pay

s = m + 3

5s + 6m = $147

5 (m + 3) + 6m = $147

5m + 15 + 6m = $147

11m = $132

m = $12

s = m + 3

s = 12 + 3

s = $15

Answer:

x = 7

Step-by-step explanation:

The two triangles are similar by AA similarity.

6 : 36 = x : 42

1 : 6 = x : 42

x = 7

Answer:

Answer would be 7.

Step-by-step explanation:

Answer:

yee

Step-by-step explanation:

yee

Answer:The value of the 1 in the ones place is 10 times​ the value of the 1 in the tenths place.

Step-by-step explanation:

Answer: D

Step-by-step explanation:

because

Answer:

D

Step-by-step explanation:

Answer:

Step-by-step explanation:

4y = 20 + 8x

y = 5 + 2x

Answer:

Option B

Step-by-step explanation:

-8x + 4y = 20

[tex]-8x+8x+4y=20+8x \leftarrow \text {Addition Property of Equality.}\\4y=20+8x\\\\\frac{4y}{4}=\frac{20+8x}{4} \leftarrow \text {Division Property of Equality.}\\y=5+2x\\\boxed {y=2x+5}[/tex]

Option B should be the correct answer.

Answer:

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

substitute x into the equation

Answer:

x > 0

Step-by-step explanation:

Division by zero is not defined.  Therefore, x must be greater than zero.  Also:  The square root function is defined only for x greater than zero or equal to zero.  Together these restrictions tell us that the domain is (0, infinity ).

Answer:

It is not.

Step-by-step explanation:

[tex]15^{2}[/tex]+[tex]7^{2}[/tex]=225+49=274

[tex]16^{2}[/tex]=256

274≠256

Answer:

No, this triangle is not a right triangle

Step-by-step explanation:

If (7 cm)^2 + (15 cm)^2 = (16 cm)^2, then this is a right triangle, by the Pythagorean Theorem.  Otherwise it is not.

15^2 + 7^2 = 225 + 49 = 1225 = 35^2.  This is FALSE, and so:

No, this triangle is not a right triangle

Answer:

5.2

Step-by-step explanation:

Answer:

254.34 cm^2

Step-by-step explanation:

Volume of cylinder = [tex]\pi r^{2} h[/tex]

We know that the diameter is 6, which means that the radius is 3 cm.

Now, it also tell us that that the height is triple the radius, this means that we multiply it by 3. Therefore, the height is 9 cm.

Now we know r = 3 cm and h = 9 cm, pi is assumed to 3.14 as well.

Substituting into the formula we will end up with 254.34 cm^2.

Answer:

A

Step-by-step explanation:

A=hbb

2

Solving forhb

hb=2A

b=2·29.7

13.5≈4.4

In the first image, notice that the figure is a cube

also known as a "square prism."

Since a cube is composed of square bases, we

want to find a net that is composed of all squares.

Notice that the option of the bottom left is composed of squares.

So this net matches the figure.

Answer: is number one

Step-by-step explanation: well 1 ,i  took a test , 2 just imagin your folding it . have a nice day

Answer:

1a) C, D, E   is over 600 cubic inches.

1b) x4.8 greater  The sphere is x4.8 greater than the first cone.

Step-by-step explanation:

A) Smaller Right cylinder V≈565.49   cubic inches

B) Smaller cone V≈188.5  cubic inches

C)  Cylinder right prism V≈1696.46  cubic inches

D) Right circular cone V≈565.49     cubic inches

E ) Sphere V≈904.78 cubic inches

1b) Volume of sphere/volume of smaller cone

is 904.78/188.5=  4.7998938992  =  x4.80 greater.

Answer: x = 2

Step-by-step explanation: To solve this equation, we start by distributing the 4 through the parentheses on the left side.

So we have 4(x) which is 4x and 4(6) which is 24.

So our equation now reads 4x + 24 = 32.

Solving from here, we subtract 24 from both sides to get 4x = 8.

Then divide both sides by 4 to get x = 2.

Answer:

Correct option: second one -> 24 square units

Step-by-step explanation:

First we need to find the length of each side of the trapezoid, and we do that finding the distance between points:

AB = sqrt( (-1 - (-3))^2 + (2 - (-2))^2) = 4.4721

BC = sqrt( (3 - (-1))^2 + (2 - 2)^2) = 4

CD = sqrt( (5 - 3)^2 + (-2 - 2)^2) = 4.4721

DA = sqrt( (-3 - 5)^2 + (-2 - (-2))^2) = 8

The points B and C have the same y-coordinate, and the points D and A also have the same y-coordinate, so they are the bases of the trapezoid.

The height of the trapezoid is the difference in y-coordinate of points B and A:

height = 2 - (-2) = 4

So the area of the trapezoid is:

Area = (BC + DA) * 4 / 2 = (4 + 8) * 2 = 24 square units

Correct option: second one

Answer:

Its B

Step-by-step explanation:

The value of JW is 14 units.

A triangle is a polygon with 3 sides. The area of a triangle with base b and height h is given by A = (1/2)bh.

Given that, JB is the median of the triangle and JW = 6x + 2 and JB = 10x + 1.

The distance between the centroid and a vertex of a triangle is 2/3 of the length of the median, therefore, it follows:

JW = (2/3)JB

Substitute the values:

6x + 2 = (2/3)(10x + 1)

18x + 6 = 20x + 2

2x = 4

x = 2

Substitute x = 2 into the expression for JW:

JW = 6(2) + 2

JW = 14

Hence, the value of JW is 14 units.

Learn more about triangles here:

https://brainly.com/question/2773823

#SPJ2

Answer:

first and last one

Step-by-step explanation:

first one would be 12 and last one is 10

Answer: X=3

Step-by-step explanation:

The answer would look something like this:

[tex]\frac{2+-\sqrt{2^{2}-4(-3)(6) }}{2(-3)}[/tex]

There could also have a simplified version.

I hope this helps.

Answer:

Somebody answer hurry i also need help

Step-by-step explanation:

Answer:

yo give me da pic >:3

Step-by-step explanation: