Answer: I think 7
Step-by-step explanation:
A company has developed a training procedure to improve scores on the SAT. Following the training, 100 high school students take the SAT. The average math score is 517, with s = 90. Assuming µ = 500 for the math SAT, test the null hypothesis. Did training significantly improve scores (α = .05, directional)?
Answer:
The calculated t-test = 1.717 < 1.6604 at 0.05 level of significance
Null hypothesis is accepted at 0.05 level of significance
A company has developed a training procedure is significantly improve scores
Step-by-step explanation:
Step(i):-
Given sample mean (x⁻ ) = 517
sample standard deviation (s) =90
Mean of the Population (μ) =500
Null Hypothesis :- H₀ : (μ) =500
Alternative Hypothesis : H₁ : μ ≠ 500
Step(ii):-
Test statistic
[tex]t = \frac{x^{-} -mean}{\frac{s}{\sqrt{n} } }[/tex]
[tex]t = \frac{517 -500}{\frac{90}{\sqrt{100} } }[/tex]
t = 1.717
Level of significance
∝ = 0.05
t₀.₀₅ = 1.6604
The calculated t-test = 1.717 < 1.6604 at 0.05 level of significance
Conclusion:-
Null hypothesis is accepted at 0.05 level of significance
A company has developed a training procedure is significantly improve scores
Suppose there is a 1.2 Fahrenheit drop in temperature for every thousand feet that an airplane climbs into the sky if the temperature on the ground is 64.7 Fahrenheit what will the temperature be when the plane reaches an altitude of 5000 feet
9514 1404 393
Answer:
58.7 °F
Step-by-step explanation:
At 5000 feet, the airplane is 5 times 1000 feet above the ground, so the temperature will have dropped 5 times 1.2 °F.
64.7 - 5×1.2 = 64.7 -6.0 = 58.7
At 5000 feet, the temperature is 58.7 °F.
can someone help meh? ( last slide )
Write an equation of a line that passes through the point (-4, 5) and have a slope of 1/2
Answer:
y = 1/2x + 7
Step-by-step explanation:
y = mx+ b
y = 5
x = -4
5 = 1/2(-4) + b
5 = -2 + b
7 = b
PLEASE PLEASE HELP I NEED IT ASAP
Answer:
c = 122
General Formulas and Concepts:
Pre-Algebra
Equality PropertiesGeometry
Definition of a Line: A line is 180°Step-by-step explanation:
Step 1: Set up equation
(c - 3)° + 61° = 180°
Step 2: Solve for c
Combine like terms: c + 58 = 180Subtract 58 on both sides: c = 122And we have our final answer!
Are the lines parallel, perpendicular, or neither? 2x-3y=4 and 6y=4x+1
Answer:
parallel
Step-by-step explanation:
7/4725 please help meeeeeeee
Help !!!! Please I need to answer this ASAP
what is the value of x when 3x < -2x + 15
Answer:
X < 3
Step-by-step explanation:
To solve the equation 3x < -2x+15
the steps are as follow:
+ 2x to both sides
Result: 5x < 15
Then divide by 5 to both sides to get x alone.
Final Product:
x < 3
A triangle with area 195 square inches has a height that is one less than four times the base. Find the base and the height of the triangle.
Answer:
base = 85 square inches
Step-by-step explanation:
hienght 39 square inches plz give me the brailiest
Answer:
Bace is 10 and hight is 39.
Step-by-step explanation:
What value of g makes the equation 32 + 3g = 4g + 20.5 true
Answer:
g= 11.5
Step-by-step explanation:
32+3g = 4g+20.5
11.5+3g = 4g
11.5 = 1g
11.5 = g
Please I need some answers
5w 2-6 + 11 help pls
Answer:
5
2
−
6
+
1
1
5
w
2
−
6
+
11
5w2−6+11
Simplify
1
Add the numbers
5
2
−
6
+
1
1
5
w
2
−
6
+
11
5w2−6+11
5
2
+
5
Step-by-step explanation:
Find the volume of a rectangle prism with length 4 m width 6 mans height 11 m.
Answer:
264 m^3
Step-by-step explanation:
4 m * 6 m * 11 m = 264 m^3
Answer:
264
Step-by-step explanation:
Google!
Hope this helps. Good luck!
What are parcial products or 235 multiplied by 49
Answer: 11,515
Step-by-step explanation: Hope this helps:)
Answer:
11,155
Step-by-step explanation:
Beacsicly what she said
please need help fast
Answer:
6/10
Step-by-step explanation:
The answer is A
All whole numbers are integers ( True or false)?
Answer:
false i think sry if im wrong
Step-by-step explanation:
What is the y-intercept of y = –3x + 6?
Find the values of x and y.
Answer:
If you have given an equation, you see the x and y in it. Just taking second equation and think any common factor between x's variable. With common factor, multiply both and you will find the value of y and put it in any equation, you will find the value of X.
The Connor family earned $87,000 last year and paid 12% in income tax.
How much did they pay in income tax? *
Answer:
10,440
Step-by-step explanation:
12/100=x/87,000
you are trying to solve for x because you want to know what is 12% of 87,000 so you need to cross multiply to get
12 times 87,000 = 100x
1,044,000=100x
then divide by 100 to get
=10,440
Which is greater 0.35. Or 2/5
Answer:
2/5
Step-by-step explanation:
2 divided by 5 is 0.4 which is greater than .35
Answer:
0.35 < 2 /5
Step-by-step explanation:
Simplifying then comparing both terms 0.35 and 2/ 5 .
0.35 is less than 0.4 which means that the first term is less than the second term.
On a number line, what is the distance between -9 and -5?
Answer:
The distance on a number line between -9 and -5 would be 4. This is kinda easy.
Step-by-step explanation:
A number line is just that – a straight, horizontal line with numbers placed at even increments along the length. The distance between -9 and -5 on a number line is 4 units.
What is a number line?A number line is just that – a straight, horizontal line with numbers placed at even increments along the length. It’s not a ruler, so the space between each number doesn’t matter, but the numbers included on the line determine how it’s meant to be used.
On a number line, the distance between any two points can be found by subtracting one number from another, then taking its absolute values of it.
Therefore, the distance between -9 and -5 on a number line can be written as,
Distance = |-9 - (-5)|
= |-9 + 5|
= |-4|
= 4
Hence, the distance between -9 and -5 on a number line is 4 units.
Learn more about the Number line here:
https://brainly.com/question/557284
#SPJ2
The picture is up there to answer the answer THANK U PLEASE
I NEED HELP ASAP IT IS DUE IN 5 minutes
3/4 times x + 7 = -5
Answer:
-16
Step-by-step explanation:
(3/4)x+7=-5
(3/4)x=-12
x=-12(4/3)
x=-16
what do I do?????????
A fact family is made up of three numbers. Just as in any family the members, or numbers, are related and there are always at least four math facts to be made with them. Take, for example, these members of a fact family: 6, 4, and 10.
In the family 6, 4, and 10 they are related because you can add two of the numbers to get the last number.
6 + 4 = 10
You can also switch the first two numbers, using the commutative property of addition, and still get the same answer.
4 + 6 = 10
Just find how they can relate! Hope it helps!
Answer:
3 times 6 = 18 2 times 5 = 10
6 times 8 = 18 5 times 2 = 10
18 divided by 6 = 3 10 divided by 2 = 5
18 divided by 3 = 6 10 divided by 5 = 2
Consider the line y=7x-3.
Find the equation of the line that is parallel to this line and passes through the point (8, 5).
Find the equation of the line that is perpendicular to this line and passes through the point (8, 5).
Answer:
1st question: y=7x-51
Step-by-step explanation:
So for the first question: *aHem*
You rewrite the equation to be 5=7*8+b. The reason why is because since it will be parellel it will have the same slope, and those coordinates that you gave me I just plugged into equation.
Solve equation: 7*8=56 so now it's 5=56+b. Subtract 56 from both sides. -51=b
Rewrite again into y=7x-51. The reason why is because b means y intercept and you are looking for where to start (y-intercept) and keeping the same slope. Parallel means never touching.
A $40 autographed and framed poster of the Spice Girls goes up in price to $50. What is the percent of increase in the price?
Answer: it went up 25%
Step-by-step explanation: if it would have went up 50%, that would be $20, meaning it would be $60. It is 25% and it is half of 50% and half of $20 is $10 equaling $50
A $40 autographed and framed poster of the Spice Girls goes up in price to $50. What is the percent of increase in the price?
=
25% increase
What are three different things you know about squares? List them.
Answer:
1) There are 4 sides in a square where all the sides are equal
2) Squares have 90 degree angles!
a nd three) it has 4 equal angles
Answer:
- all four sides are equal
- 4 right angle corners (90 degree corners)
- its also a rectangle with equal sides and a rhombus with right angles.
Step-by-step explanation:
can someone help pls
Answer:
Step-by-step explanation:
1) f(-6)= 3
2)f(0)=3
3)f(1)=4
4)f(3)=6
5)sol. to f(x)=5 is 2
6)sol. to f(x)=0 is -3
-2.45 + 5.5x -4.3x = 1.3 +0.7x
Answer:
The answer would be x=7.5
Step-by-step explanation:
Answer:
x=7.5
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−2.45+5.5x−4.3x=1.3+0.7x
−2.45+5.5x+−4.3x=1.3+0.7x
Step 2: Combine Like Terms
(5.5x+−4.3x)+(−2.45)=0.7x+1.3
1.2x+−2.45=0.7x+1.3
1.2x−2.45=0.7x+1.3
Step 3: Subtract 0.7x from both sides.
1.2x−2.45−0.7x=0.7x+1.3−0.7x
0.5x−2.45=1.3
Step 4: Add 2.45 to both sides.
0.5x−2.45+2.45=1.3+2.45
0.5x=3.75
Step 5: Divide both sides by 0.5.
0.5x/0.5=3.75/0.5
so
x = 7.5