Ask question

Ask question

All categories

1 year ago

7

Find the P-value in a test of the claim that the mean IQ score of acupuncturists is equal to 100, given that the test statisti

c is z2.00.

1 answer:

klemol [59]1 year ago

7 0

Answer:

P-value = 0.0455

Step-by-step explanation:

In this question, we are concerned with calculating the P- value in a test.

Mathematically we know that;

P-value = 2 * P(Z > |z|)

Please check attachment for complete solution and by step explanation

You might be interested in

If four men need $24.00 worth of food for a three-day camping trip, how much will two men need for a two-week trip?

Vitek1552 [10]

$56 because 24 divided by 4 men divided by 3 days=2 times 14 days times 2 men=56

3 0

2 years ago

Read 2 more answers

Henry constructed circle A with a radius of 4 units. He then created a sector as shown in the figure below. Which of the followi

puteri [66]

The picture in the attached figure

we know that
area of a sector=(∅*pi/360°)*r²--------> when ∅ is in degree

in this problem
∅=120°
r=4 units
so
area of a sector=(120°*pi/360°)*4²-------> (120°/360°)*(16*pi) units²

The <span>expressions to find the area of the shaded sector is
</span>(120°/360°)*(16*pi) units²

(1/3)*(16*pi)----> (16/3)*pi units²

the area of the shaded sector is (16/3)*pi units²

8 0

2 years ago

Write an equation in slope intercept form for the line that contains the given point and is parrallel to the given line (0,4),Y=

Ilya [14]

Answer:

y = ½x + 4

Step-by-step explanation:

4 = ½[0] + b

0

4 = b

Parallel lines have SIMILAR <em>RATE</em><em> </em><em>OF</em><em> </em><em>CHANGES</em><em> </em>[<em>SLOPES</em>], so the 4 remains in the <em>m</em><em> </em>spot, plug in the ordered pair into the equation, then solve for <em>b</em><em>.</em><em> </em>This is your new equation once done:

y = ½x + 4

If you are ever in need of assistance, do not hesitate to let me know by subscribing to my You-Tube channel [USERNAME: MATHEMATICS WIZARD], and as always, I am joyous to assist anyone at any time.

**I have a video that explains how to find perpendicular and parallel lines of given lines. It is titled "Finding Slopes, y-intercepts, Perpendicular Equations, and Parallel Equations". Watch and gain alot more knowledge, so you can be one of the best of the best.

4 0

2 years ago

Un kg de banane costa cat doua kilograme de portocale . Un restaurant a cumparat 30 de kg de portocale si 45 de kg de banane , p

Nimfa-mama [501]

Answer:

<h2>One kilogram of oranges cost $3.</h2>

Step-by-step explanation:

The problem states

1 kilogram of bananas costs as much as 2 kilograms of oranges. ( $1 \ kg \ bananas = 2 \ kg \ oranges$ )
30 kilograms of oranges plues 45 kilograms of bananas cost $360.

Let's call $x$ one kilogram bananas and $y$ one kilogram oranges. The cost is related by

$x=2y$

Also, we know by given

$45x+30y=360$

Replacing the first equation into the second one, we have

$45(2y)+30y=360\\90y+30y=360\\120y=360\\y=\frac{360}{120}\\ y=3$

Then, we find the other value

$x=2(3)=6$

Therefore, one kilogram of oranges cost $3.

5 0

1 year ago

A median of a triangle is a line segment joining a vertex to the midpoint of the opposite side. Find the lengths of the median o

nexus9112 [7]

Answer:

$5/2units\\$ .

$\sqrt{47/2}units \\$ .

$\sqrt{41/2}units\\$ .

Step-by-step explanation:

The given points are A(1,2,3), B(-2,0,5) and C(4,1,5). The triangle is represented in the attach file where the three possible median are length AE, BF, and CD. We determine the coordinate of point D,E and F using the midpoint equation which is for any point A(x,y,z) and point B(a,b,c), the midpoint D is determine by

$D=(\frac{x+a}{2},\frac{y+b}{2},\frac{z+c}{2})\\$ .

Hence going by the above formula we determine the coordinate of point D,E and F

$D=(\frac{-2+1}{2},\frac{0+2}{2},\frac{5+3}{2})\\$ .

$D=(\frac{-1}{2},1,4)\\$ .

point E

$E=(\frac{4-2}{2},\frac{1+0}{2},\frac{5+5}{2})\\$ .

$E=(1,\frac{1}{2},5)\\$ .

Point F

$F=(\frac{4+1}{2},\frac{1+2}{2},\frac{5+3}{2})\\$ .

$F=(\frac{5}{2},\frac{3}{2},4)\\$ .

To determine the length of each median line we use the formula for distance between two points which is express as

$AB=\sqrt{(y_{2}-y_{1} )^{2} +(x_{2}-x_{1} )^{2}+(z_{2}-z_{1} )^{2}} \\$ .

Using the above formula we determine the length of line AE,BF and CD.

$AE=\sqrt{(1-1 )^{2} +(1/2-2)^{2}+(5-3 )^{2}} \\$ .

$AE=\sqrt{0 +9/4+4} \\$ .

$AE=\sqrt{25/4} \\$ .

$AE=5/2units\\$ .

For point BF

$BF=\sqrt{(5/2+2 )^{2} +(3/2-0)^{2}+(4-5 )^{2}}\\$ .

$BF=\sqrt{81/4 +9/4+1} \\$ .

$BF=\sqrt{47/2} \\$ .

$BF=\sqrt{47/2}units \\$ .

For point CD

$CD=\sqrt{(-1/2-4 )^{2} +(1-1)^{2}+(4-5 )^{2}}\\$ .

$BF=\sqrt{81/4 +0+1} \\$ .

$BF=\sqrt{41/2} \\$ .

$BF=\sqrt{41/2}units\\$ .

7 0

1 year ago