formula of Santander deviation .
Answer:
Step-by-step explanation:
Answer:
Work out the Mean(the simple average of the numbers)
Then for each number: subtract the Mean and square the result.
Then work out the Mean of those squared differences.
Take the square root of that and we are done!
Step-by-step explanation:
Juan’s battery only has 6 7 battery life left and drains at 2 5 per hour. How many hours will the battery last?
Answer:
3 hours
Step-by-step explanation:
Answer:
she will have a little more then 3 hours left but less then 4.
Step-by-step explanation:
71+(-43)-13 give me the answer
Answer:
15
Step-by-step explanation:
combine -43 and -13 to get 66
71-66 = 15
two angles are complementary. The larger angle is 64 degrees larger than the smaller angle. Find the measure of both angles.
Answer:
64° and 26°?
Step-by-step explanation:
I just subtracted 64 from 90. Hope that helps
write the number in standard form (8x1) +(7x1/1,000
I think 7008x is the answer
If a = -4, b = 2, C = 3, and d = -5, then what is the value of (a - b)2 + (c- d)2
Answer:
100
Step-by-step explanation:
Put the values where the corresponding variables are, then do the arithmetic.
(-4 -2)^2 +(3 -(-5))^2
= (-6)^2 +(8)^2
= 36 +64 = 100
Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
[tex](a - b)2 + (c- d)2\\(-4-2)2+(3--5)2\\(-6)2+(8)2 \\-12+16\\4[/tex]
A group of freshmen at a local university consider joining the equestrian team. Thirty-five percent of students choose Western riding, 45% choose dressage, and 40% choose jumping. Fifteen percent choose both dressage and jumping, while 15% choose Western and dressage. No one chooses Western and jumping. There are no horses suitable for two styles, and each student is assigned to one horse. If two students decide to join the team, what is the probability that one student joins jumping only and the other student joins the Western team, if they independently decide
Answer:
Step-by-step explanation:
see attached file .
3 (x - 2) = 7 – (4 - x)
Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
x=92x=92
Decimal Form:
x=4.5x=4.5
Mixed Number Form:
x=412x=412
the answer is x = 9/2
explanation
3 (x - 2) = 7 – (4 - x)
apply the distributive law to 3(x - 2)
to get 3x - 6
simplify 7-(4-x)
3 + x
you now have
3x - 6 = x + 3
add 6 to both sides
-6+6=0 3 + 6 = 9
3x=x+9
subtract x from both sides
3x - x = 2x x - x = 0
2x = 9
divide both sides by 2
2x/2 = x 9/2
to get x = 9/2
Each week Scott spends $10 of his allowance at QT. If his total allowance is $25,what percent of his allowance does he spend at QT each each?
Answer:
5
Step-by-step explanation:
bc
Answer:
40%
Step-by-step explanation:
10/25 = x/100
10 × 4/ 25 × 4 = x/100
40/100 = x/100
40 = x
A team of scientists are conducting research on the effect of word fonts used in road signs on accident rates. Across the population, there is an average of μ = 40 accidents per year due to unclear road sign fonts, with a standard deviation of σ = 10. The distribution is approximately normal. The team believes that certain fonts are difficult to read and may cause accidents, and it wants to implement a change to road sign fonts nationwide. The team is recommending a new font to replace the old fonts in road signs. After a series of studies, the team finds that the new font decreases accidents. However, the effect size is rather small (d = - 0.2). If the change to road sign fonts is implemented and there truly is an effect, it is expected that the new average rate of accidents will be: μ = 38 (i.e., hypothesized mean of the treatment group). In other words, this change should decrease accidents by 2, on average. [50 points total]
A.) Because implementing such large-scale changes is very costly, the government wants to be sure that the investment will be impactful. For a hypothesis test, they want the α-level to be small to minimize error. It is decided that α = 0.01, and a one-tailed test will be used. [50 points]
-What type of error is minimized by setting a stricter (smaller) α-level?
-With a one-tailed hypothesis test at α = 0.01, use the unit normal table to find the zscore that marks the critical region.
B.) A sample of n = 100 people are selected to go through a road trial with new fonts in the road signs. Again, the treatment is expected to decrease accidents by 2 on average. If the researchers use a one-tailed hypothesis test with α = 0.01, what is the power of the hypothesis test? [10 points]
C.)An external consultant is worried that there may not be enough power to detect such a small effect with such a small sample size. The consultant recommends that the researchers select a sample of n = 400 people instead. With this new sample size, and assuming a one-tailed hypothesis test with α = 0.01 again, what is the power of the hypothesis test?
D.)Based on your answers in 3(b) and 3(c), calculate the probability of making a Type II error in both cases and explain what the values mean.
E.) Explain how sample size influences power. Discuss what this means in terms of the conclusions you might make in hypothesis testing. (You can use your answers in 3(b) and 3(c) as an example.)
Answer:
Step-by-step explanation:
You should start by
In his book Chances: Risk and Odds in Everyday Life, James Burke states that there is a 72% chance a polygraph test (lie detector test) will catch a person who is, in fact, lying. Furthermore, there is approximately a 7% chance that the polygraph will falsely accuse someone of lying. (Round your answers to one decimal place.) (a) Suppose a person answers 90% of a long battery of questions truthfully. What percentage of the answers will the polygraph wrongly indicate are lies
Answer:
6.3%
Step-by-step explanation:
From the informationn we have available in this question, there is 7% chance that this polygraph would accuse someone falsely and a 72% chance that the polygraph would be correct in predicting a list.
Now if a person's answer is 90% correct,
The percentage that the polygraph would pick wrongly to be lies =
0.07 x 0.90 x 100
= 6.3%
Is 7.711 a rational number?
Can someone help me with 42 divided by 9
Answer:
4.6 or if you rounded it would be 5
The division of the number 42 divided by 9 gives 4.666.
To calculate 42 divided by 9
Perform the division:
= 42 ÷ 9
= 42/9
= 4.666666...
Also, long division method can be used.
The long division method gives quotient is 4.666.
So, 42 divided by 9 is 4.67.
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HELP ME PLS IM TO LAZY
4/5 divide by 8 in the simplest form?
can I get an answer please
Step-by-step explanation:
1.3(3)+7=16
9+7=16
16=16
So option 1 is correct
HELP PLEASEEEEEEE WILL MARK YOU AS BRAINLEIST
Answer:
-1, -1
Step-by-step explanation:
when you turn it it will change the coordinates as well
What is the value of y?
Answer:
The value of y in what equation, y can equal anything depending on the equation.
12 more than three times a number is equal to the difference between -24 and three times the number
Step-by-step explanation:
12+ 3x= -24 -3x
Collect like terms
12 +24= - 3x -3x
36 = - 6x
Divide both sides by -6
Therefore, x = -6
HELP the subject is homeck
Answer:
Multiply by 5
Step-by-step explanation:
30 people in class and the recipe makes 6 bowls. 30/6= 5, so you need to multiply the recipe by 5 to make enough for each person to have one bowl of stew.
7.5 tablespoons of oil
5 small onions
10 cloves of garlic
7.5 lbs of caribou
12.5 cups of broth
12.5 cups of diced celery
12.5 cups of diced carrots
15 potatoes
2.5 teaspoons of salt
5 dashes of pepper
It took a car 5 days to travel 1459 miles. What was this car’s average speed, in miles per hour?(round to the nearest mile per hour)
Answer:
12.158333333 miles per hour or 12
Step-by-step explanation:
24 × 5 = 120 hrs
1459÷120=12.15833333
or 12 miles per hour
On the map, the school and the sports park are 12 centimeters apart.
What is the actual distance between the school and the park? PLEASE HELP ILL MARK BRAINLIST.
Answer:
The school and the sports park are 15 km apart.
Step-by-step explanation:
4 cm = 5 km
1 cm = 5 / 4 km
12 cm = 15 km
Answer:
15 kmStep-by-step explanation:
On the map, the school and the sports park are 12 centimeters apart.
scale 4cm : 5km
find;
What is the actual distance between the school and the park?
solution:
12 cm = 4 cm
X km 5 km
cross multiply:
4 cm X km = 12 cm (5 km)
X = 12 cm (5 km)
4 cm
X = 15 km
therefore, the distance between the school and the sports park is 15 km
Find the 5th term of the arithmetic sequence 10,5,0....
Answer:
-10
Step-by-step explanation:
10, 5, 0, -5, -10
Subtracts 5 every step.
Isabel's dog gets 55.4 grams of protein in each meal. How much protein does the dog get in 8 meals? Please help
Answer:
443.2
Step-by-step explanation:
(i)If the circumference of the circle is 88 cm ; Find the diameter.
(Take π = 22/7 )
Circumference of the circle = 88 cm
π = 22/7
To Find:The Diameter of the circle.
Formula:Circumference of circle = 2πr
r = radius
Solution:Circumference of the circle = 2πr = 88 cm
Circumference of the circle = πr = 88/2 = 44 cm
Circumference of the circle = r = 44 × 7/22 = 14 cm
r (radius) = 14 cm
d (diameter) = 2r = 2(14) = 28 cm
Answer:Diameter of the circle = 28 cm
What is the greatest common factor of 12a and 9a2? 9 36 3a 12a2
Answer:
3a
Step-by-step explanation:
12a and 9a^2
first find the GCL between 9 and 12 which is 3
then find the GCL between a and a^2 which is a
combine them to form 3a
The greatest common factor of 12a and [tex]9a^2[/tex] is 3a.
Given that,
There is 12 a and [tex]9a^2[/tex]calculation:The GCF should be
12a = [tex]3 \times 4a[/tex]
And, [tex]9a^2 = 3\times 3a[/tex]
based on this, the factor should be 3a
Learn more about the GCF here:https://brainly.com/question/11444998?referrer=searchResults
PLZZZZZZZZZZZZZ HELP Simplify the expression.
–5^4
Answer:
625
Step-by-step explanation:
All it is saying to do is to do -5x-5x-5x-5
Answer:
625
Step-by-step explanation:
–5^4 is simply -5 times -5 4 times
the negatives cancel each other
out
use the set of clues in the equations below to find the value of each variable .
x + h + b = 14
2 * b = 12
h - x = 2
please help me out thank you!
Use the clues to find the mystery number. The mystery number is –
• 1,000 when rounded to the thousands place;
• 800 when rounded to the hundreds place; and
• 770 when rounded to the tens place.
Which of the following could be the mystery number?
• 741
775
765
> 779
K BACK
QL
===========================
Explanation:
If we rounded 741 to the nearest tens, then it would round to 740. But we want 770. So we cross this off the list.775 rounds to 780 when rounded to the nearest tens. This is crossed off as well.765 rounds to 770 when rounding to the nearest tens place, it also rounds to 800 when rounded to the nearest hundreds place. Finally, 765 rounds to 1000 when rounded to the thousands place. This shows why 765 is the answer. Other possible answers include {766, 767, 768, 769} if we're only allowed to deal with whole numbers. The number 779 rounds to 780 when rounding to the nearest tens place. So we cross this off the list.From left to right, the angles are A F B, B F C, C F D, and D F E. Which angles are adjacent? Select all that apply. ∠AFB and ∠BFC ∠AFB and ∠CFD ∠BFC and ∠CFD ∠BFC and ∠DFE ∠CFD and ∠DFE
Answer:
these are the angles and by the way the answer above me is correct in case you were wondering
Step-by-step explanation:
hi
Angle AFB and angle BFC are adjacent angles and angle CFD and angle DFE are adjacent angles. Therefore, the correct options are A and B.
What are adjacent angles?Adjacent angles are those angles that are always placed next to each other in such a way that they share a common vertex and a common side but they do not overlap each other.
In the given figure, AFE is a straight line, angle AFB, angle BFC, angle CFD and angle DFE are from the point F.
Here, angle AFB and angle BFC are adjacent angles
Angle BFC and angle CFD are adjacent angles
Angle CFD and angle DFE are adjacent angles
Angle AFB and angle BFC are adjacent angles and angle CFD and angle DFE are adjacent angles. Therefore, the correct options are A and B.
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Geometry question I need help with
Answer:
angle XYW = 44
Step-by-step explanation:
Supplementary angles add up to 180 degrees. So:
(5x - 6) + (12x+16) = 180
*combine like terms*
17x + 10 = 180
- 10 -10
17x = 170
/17 /17
x = 10
angle XYW = 5x - 6
5(10) - 6 = ?
50 - 6 = 44
