Answer:
The 95% confidence interval = [ 125.28, 148.52]
Step-by-step explanation:
In a sample of 17 hip surgeries of a certain type, the sample mean surgery time was 136.9 minutes witha sample standard deviation s=22.6 minutes. Find a 95% confidence interval for the mean surgery time for this procedure. The CI is:____________
The formula for Confidence Interval =
Cl = Mean ± t × standard deviation/√n
We are using t score because our sample size is less than 30, hence it is small
Degrees of freedom = n - 1 = 17 - 1 = 16
T score for 95 % confidence interval = 2.120
CI = 136.9 ± 2.120 × 22.6/√17
CI = 136.9 ± 2.120 × 5.4813051258
CI = 136.9 ± 11.620366867
CI
= 136.9 - 11.620366867
= 125.27963313
≈ 125.28
136.9 + 11.620366867
= 148.52036687
≈ 148.52
The 95% confidence interval = [ 125.28, 148.52]
Determine the number of acute, obtuse, and right angles in the shape above.
The average biker travels 124 kilometers in an 8 hour bike race. At what rate does the biker travel?!!!!!!PLEASE ANSWER I NEEED IT PLEASE!!!!!!
Answer:
15.5 km/h
Step-by-step explanation:
Evaluate 2ab if a=5 and, b=8.
Answer:
80
2(5)(8)
you multiply 2 times 5 = 10
10 times 8 is 80
Find the value of this question
Answer:
the expression is equal to 0
Convert 12 ounces to pounds use the conversion rate 16 ounces = 1 pound
Answer:
3/4 pound
Step-by-step explanation:
12/ 16
÷4 on top and bottom
Answer:
0.75lbs
Step-by-step explanation:
which of these expressions are equivalent to 2^2/2^8 select two that apply
Answer:
4/256
1/64
Step-by-step explanation:
2^2=4
2^8=256
4/256
4/4=1
256/4=64
1/64
which of the following would you expect to have the highest interest? a 5-year CD a 10-year CD and online savings account or savings account at a Traditional Bank
Answer:10-year CD
Step-by-step explanation:
No
A water fountain dispenses 50 gallons of water in 20 minutes. At this rate, how many gallons of water will it dispense in 5 minutes? ANSWER NOW I WILL GIVE YOU A BRAINLLEST
Answer:
ALL THE ANSWERS ARE HERE AND EXPLAINED
Step-by-step explanation:
Answer:
If 50gallons of water are dispensed in 20 minutes then 12.5 gallons of water would be dispensed in 5 minutes
Step-by-step explanation:
[tex]\frac{50gallons}{20 minutes}[/tex] = 2.5 gallons a minute
2.5 gallons X 5 minutes= 12.5 gallons dispensed in 5 minutes
IM BEING TIMED PLEASE HELP
Which of the 5 point problems are you solving?
A
B
C
Answer:
B. x = 7
Y = 3
Step-by-step explanation:
Choose the ratio that is equivalent to 4:6.
Group of answer choices
3:6
4:8
8:12
8:10
Answer:
8:12
Step-by-step explanation:
Answer:
8:12
Step-by-step explanation:
Both numbers are multiplied by 2
Arianna solved a fraction division problem using the rule “multiply by the reciprocal.” Her work is shown below. Two-thirds divided by StartFraction 4 Over 5 EndFraction. Two-thirds times StartFraction 4 Over 5 EndFraction = StartFraction 8 Over 15 EndFraction Which is the most accurate description of Arianna’s work? Arianna solved the problem correctly. Arianna multiplied the dividend by the divisor instead of finding the reciprocal. Arianna multiplied the denominators instead of finding a common denominator. Arianna multiplied with the reciprocal of the dividend instead of the reciprocal of the divisor.
Arianna solved a fraction division problem using the rule "multiply by the reciprocal." Her work is shown below. Two-thirds divided by StartFraction 4 Over 5 EndFraction. Two-thirds times StartFraction 4 Over 5 EndFraction = StartFraction 8 Over 15 EndFraction Which is the most accurate description of Arianna's work? Arianna solved the problem correctly. Arianna multiplied the dividend by the divisor instead of finding the reciprocal. Arianna multiplied the denominators instead of finding a common denominator. Arianna multiplied with the reciprocal of the dividend instead of the reciprocal of the divisor.
Answer
4.0/5
47
Arianna multiplied the dividend by the divisor instead of finding the reciprocal.
The fraction division problem Arianna solved is
Adrianna's next step is
We are supposed to choose from the options the most accurate description of Arianna's work.
The mistake Arianna committed is that, she did not reciprocate the before multiplying.
Therefore the correct answer is:
Arianna multiplied the dividend by the divisor instead of finding the reciprocal.
Answer: B Arianna multiplied the dividend by the divisor instead of finding the reciprocal.
Step-by-step explanation: every website i went on said B
What is 25√54+5√24 in simplified radical form?
Answer:
Simplified radical form is [tex]16\sqrt{16}[/tex]
Step-by-step explanation:
Rewrite in the simplest rational exponent form (y^2/3)^3/4
ILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST Paul's Pumpkin Patch advertises four pumpkins for $10.50. Which equation below represents this proportional relationship?
Answer
the 1st equation
Step-by-step explanation:
2688 divided by 96 with remainder
Answer: OK, the answer is 28.
Step-by-step explanation: Also there is no remainder for this division problem, you could have the remainder if the numbers are not the same as a multiplication problem, so did you get it?
Christian has a collection of 18 shark teeth. He identified them as 6 tiger shark teeth, 8 sand shark teeth, and the rest as bull shark teeth. What does the ratio 6:8 represent in this situation? What does the ratio 4:18 represent in this situation. Explain your reasoning. Include a model in your explanation. I
Answer:
Step-by-step explanation:
There are 18 teeth
6 tiger + 8 sand = 14
18-14 = 4
This means there are 4 bull shark teeth
4:18
4 bull shark teeth: 18 total shark teeth
Answer:
Step-by-step explanation: ratio 6:8 is tiger shark:sand shark
the ratio 4:18 is bull shark teeth:all the teath
Ihope this helps :D
Need help on this one.
Answer:
15,7,27,10 Good luck with ur work <3
-55 + 4x = 80 + 9x
help
Answer:
x = -27
Step-by-step explanation:
-55 + 4x = 80 + 9x
~Add 55 to both sides
4x = 135 + 9x
~Subtract 9x to both sides
-5x = 135
~Divide 15 to both sides
x = -27
Best of Luck!
Answer:
x= -27
Step-by-step explanation:
-55+4x=80+9x
4x-9x=80+55
-5x=135
x=-27
The mass of a substance, which follows a continuous exponential growth model, is being studied in a lab. A sample increases continuously at a relative rate of 5% per day. Find the mass of the sample after six days if there were 56 grams of the substance present at the beginning of the study.
Step-by-step explanation:
The mass of a substance, which follows a continuous exponential growth model, is being studied in a lab. A sample increases continuously at a relative rate of 11% per day. Find the mass of the sample after six days if there were 223 grams of the substance present at the beginning of the study Do not round any intermediate computations, and round your answer to the nearest tenth grams
Is -2.75 greater than -3.25? HURRY!
I WILL MARK BRAINLIST
Answer:
I think it's B.
Step-by-step explanation:
Hope that helped! Have a great rest of your day!
A password is formed by selecting three letters from the alphabet, followed by one number from 0 to 9. If
repetition is not allowed, how many potential passwords can be created?
A. 156,000
B.175,760
C.140,400
D.85
The number of potential passwords that can be created in this scenario is; C: 140400
How to solve propbability Combinations?There are 26 alphabets in english. Now, if there are no repetitions, then;
Number of ways of selecting first letter = 26
Number of ways of selecting second letter = 25
Number of ways of selecting third letter = 24
Thus;
Number of ways of selecting three letters from the alphabet if there is no repetition is; P(3 letters) = 26 * 25 * 24 = 15600
Number of ways of selecting 1 out of the 9 numbers is = 9
Thus;
Potential passwords that can be created = 15600 * 9 = 140400
Read more about Combinations at; https://brainly.com/question/4658834
Please help geometry find the solution
Answer:
Directions Unclear:
Step-by-step explanation:
I am now drowning on air.
Answer:
ok
Step-by-step explanation:
Which expression is equivalent to 20y - 5
a.4(5y-1)
b.20(y-5)
c.5(4y-1)
d.y(20-5)
b.20(y-5)
Step-by-step explanation:
not sure ops sorry
An artist is selling children's crafts. Necklaces cost $2.25 each, and bracelets cost $1.50 per each. Select all the combinations of necklaces and bracelets that the artist could sell for exactly $12.00
A diving board is 12.4 feet above the ground. The bottom of the pool is 16.9 feet below the ground. Write and solve an equation that gives the distance from the diving board to the bottom of the pool.
Answer:
29.3 feet
Step-by-step explanation:
Okay I don't know the equation to put it in, but all you need to do is add the two values together.
12.4 + 16.9 = 29.3 feet
The distance from the diving board to the bottom of the pool will be 29.3 feet.
From the information given, the diving board is 12.4 feet above the ground and the bottom of the pool is 16.9 feet below the ground.
Therefore, the equation that gives the distance from the diving board to the bottom of the pool will be:
= 12.4 + 16.9
= 29.3 feet.
Read related link on:
https://brainly.com/question/19633325
What is the value of 2.57 - 1.75?
Answer:
The value is 0.82
Step-by-step explanation:
Given the side lengths, determine whether
the triangle is acute, right, obtuse, or not a triangle
1. ( 15,16,21 )
A. not a triangle
B. Acute
C. Right
D. Obtuse
2. ( 20,23,41 )
A. Not a triangle
B. Acute
C. Right
D. Obtuse
3. ( 10,24,26 )
A. Not a triangle
B. Acute
C. Right
D. Obtuse
4. ( 6,13,20 )
A. Not a triangle
B. Acute
C. Right
D. Obtuse
Answer: For 1. ( 15,16,21 ), the answer is not a triangle, for 2. ( 20,23,41 ), this is an acute triangle, for 3. ( 10,24,26 ), this is an obtuse triangle, and for 4. (6, 13, 20), the answer is not a triangle, I hoped all of your answers is very helpful, Brainliest back please, and have a happy holidays! :D
Step-by-step explanation:
which graph represents the solution set of 2x-5<3
Step-by-step explanation:
where is the graph? If you show me I can help
Picture of the graph:
Here is the picture of the graph
if there are 5 cookies and jake eats 4 cookie how many let are there
Answer:
1
Step-by-step explanation:
Answer:
There would be one cookie left. Can I have brainlest, please?
Step-by-step explanation: