lan often takes his dog to the park. He estimates that 30% of the other dogs
he sees are retrievers, 20% are terriers, and 20% are German shepherds. He
designs a simulation.
Let 0, 1, and 2 represent retrievers.
Let 3 and 4 represent terriers.
Let 5 and 6 represent German shepherds.
Let 7, 8, and 9 represent other dogs.
The table shows the simulation results.
Answer:
0.60 if it is shepherd!
Step-by-step explanation:
given a population mean of 27.1 with a standard deviation of 8.4 and a sample size of 10, answer these questions.
part A: what is the standard deviation of the sampling distribution of x hat? show your work.
PartB: what does the sample size need to be if you want the standard deviation of the sampling distribution of x hat to be 2.8? show your work.
Answer:
a) 2.66
b) 9
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
part A: what is the standard deviation of the sampling distribution of x hat? show your work.
We have that [tex]\sigma = 8.4, n = 10[/tex]. So
[tex]s = \frac{\sigma}{\sqrt{n}} = \frac{8.4}{\sqrt{10}} = 2.66[/tex]
PartB: what does the sample size need to be if you want the standard deviation of the sampling distribution of x hat to be 2.8?
This is n when [tex]s = 2.8[/tex]. So
[tex]s = \frac{\sigma}{\sqrt{n}}[/tex]
[tex]2.8 = \frac{8.4}{\sqrt{n}}[/tex]
[tex]2.8\sqrt{n} = 8.4[/tex]
[tex]\sqrt{n} = \frac{8.4}{2.8}[/tex]
[tex]\sqrt{n} = 3[/tex]
[tex](\sqrt{n})^2 = 3^2[/tex]
[tex]n = 9[/tex]
30 kilograms of beans costs $5. How many kilograms of beans can you buy for $20?
Answer:
120 kg
the kilograms of beans which can by for $20 are
30*(20/5) = 30.4 = 120 (kg)
Answer: 120 kilograms
Step-by-step explanation:
We can buy 30 kilograms of beans for $5 dollars. We need to find how many kilograms of beans we can buy for $20.
The first step is to divide 20 by 5. Then, using the quotient, we can multiply it by 30 to see how many kilograms of beans we can buy for $20.
20 ÷ 5 = 4.
4 x 30 = 120.
Therefore, we can buy 120 kilograms of beans for $20.
Cool beans ;)
Given that 1 gallon is equal to 8 pints, how many pints are in 8 gallons?
Answer:
64 pints in 8 gallons :))
Select the correct answer. What is 2 1/2 divided by 1/3? A. 3 1/2 B. 7 1/2 C. 7 1/6 D. 2/15
Answer:
the answer is 7 and a half so it would be B
Which of the following is the equation of a line perpendicular to the line y =
-10x+1, passing through the point (5,7)?
Answer: The answer is C.
Step-by-step explanation: This is because when you solve you get y=1/10x+6.5 this graph runs through the point (5,7) and is perpendicular to y=-10x+1. In order for two equations to be perpendicular their slopes will be the opposite.
Lucas loses 12 points for every shot he misses in a basketball video game. If Lucas missed 8 shots, how many
points did he lose?
It’s multiplying signed numbers
Answer:
96
Step-by-step explanation:
Answer:
96
Step-by-step explanation:
8 times 12 is how you get it since he missed 8 and you lose 12 points every shot missed you just have to multiply them
Which of the following coordinates is in the solution set of this system?
A. (0,0)
B. (-5,3)
C. (8,-8)
D. (1,-4)
E. (2,-5)
Answer:
B.
Step-by-step explanation:
Answer:
b ceguro
pa heart din plss
Please help me
-(8x)^2
-x/4=3
-8x-5=35
-4(z+7)=36
I need help with math
Answer:
6:3
Step-by-step explanation:
What is the sale price of a hardcover book with a markdown of 46% and original price of 29.00 what is the discount amount
Answer:
15.66
Step-by-step explanation:
First you find what is 46% of 29.00 which is 13.34
Next do 29-13.34 and that is 15.66
that is your answer hope I helped. :)
Which set of ordered pairs satisfies the equation
f(x)=7x+20
Answer:
The 2nd one
Step-by-step explanation:
URGENT NEED ANSWERS •_•
1. Oceanside Bike Rental Shop charges $16 plus $6 an hour for renting a bike. Melanie paid $70 to rent a bike. How many hours did she pay to have the bike checked out? Select the correct equation to represent this situation.
A) 16x+6x=70
B) 16+ 6x=70
C) 16x+6=70
2. Jason bought 9 new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There are now only 42 cards left. How many cards did Jason start with? Select the correct equation to represent this situation.
A) 1/2(x+9)=42
B) 9x+1/2=42
C) 1/2x+9=42
3. Jason sold half of his comic books and then bought 6 more. He now has 17. How many did he begin with? Select the correct equation to represent this situation.
A) 1/2(x+6)=17
B) 1/2x+6=17
C) 1/2x+6x=17
4. Dan spent half of his allowance going to the movies. He washed the family car and earned $9. What is his weekly allowance if he ended with $15? Select the correct equation to represent this situation.
A) 1/2x+9=15
B) 1/2(x+9)=15
C) 9-1/2x=15
Answer:
1 = C
2 = B
3 = B
4= C
Step-by-step explanation:
Im not 100% sure but.. i tried
Answer:sike i lied i must provide
Step-by-step explanation: its ez just do it
Select ALL expressions that are equivalent to 5x−3x−8+4+2x
Answer:
Where the picture of your work?
The answer is 4 (x-1)
please help me
is importe
Answer:
D.Kelsy has 1 and 5/8 feet more rope
Step-by-step explanation:
(13 1/8 + 21 3/4 ) -35 1/2
34 and 7/8 - 35 and 1/2
=1 and 5/8
(25m + 22) + (9m) = ?
Answer:
Step-by-step explanation:
Simplifying
25m + 22 = 9m
Reorder the terms:
22 + 25m = 9m
Solving
22 + 25m = 9m
Solving for variable 'm'.
Move all terms containing m to the left, all other terms to the right.
Add '-9m' to each side of the equation.
22 + 25m + -9m = 9m + -9m
Combine like terms: 25m + -9m = 16m
22 + 16m = 9m + -9m
Combine like terms: 9m + -9m = 0
22 + 16m = 0
Add '-22' to each side of the equation.
22 + -22 + 16m = 0 + -22
Combine like terms: 22 + -22 = 0
0 + 16m = 0 + -22
16m = 0 + -22
Combine like terms: 0 + -22 = -22
16m = -22
Divide each side by '16'.
m = -1.375
Simplifying
m = -1.375
Samuel entered the following key strokes on his calculator. What did Samuel’s calculator display? A. 2.5E – 13 B. 2.5E – 4 C. 2.5E5 D. 2.5E14
Answer:
Step-by-step explanation:
I believe the answer would be 2.5E14- (D)
I hope that helped!!
In the case above about Samuel, we can say that Samuel's calculator has display option A; 2.5 E (- 13)
What is the calculation about?The function was 5 EE (-) 9 divided by 2 EE 4
5 EE (-) 9/ 2 EE 4
We know that, E implies 10 to rise to power.
So, the equation above is Converted from scientific notation into standard form;
= 5 EE (-) 9/ 2 EE 4
= 5/2 x 10 ⁻⁹⁻⁴
=2.5 x 10⁻¹³
Therefore, In the case above about Samuel, we can say that Samuel's calculator has display option A; 2.5 E (- 13)
Learn more about calculator from;
brainly.com/question/2146941
#SPJ2
Find two consecutive numbers whose sum is 55
Answer:
27 and 28
Step-by-step explanation:
Answer and Step-by-step explanation:
27 and 28.
27 plus 28 equals 55.
To know which numbers to use, we have to find two numbers that would produce a number that would include the digit of the second number in 55. Then, we find numbers that add up to 5, then minus by 1.
#teamtrees #WAP (Water And Plant)
2 3/4 divided by 1 7/8
1.46 I used a calculator
Answer: 1.46666667
Step-by-step explanation:
Given that L is a linear function, L (5) = 100 and L (9) = 150.
a. Determine the value of L (13)
Answer:
L(13) = 200
Step-by-step explanation:
Linear function:
A linear function has the following format:
[tex]y = mx + b[/tex]
In which m is the slope(how much y changes when x changes by 1) and b is the y-intercept(value of y when x = 0).
Finding the slope:
L (5) = 100 and L (9) = 150.
The slope is given by the change in the output(L, which is equals to y in the general formula) divided by the change in the input(x).
Change in the output: 150 - 100 = 50
Change in the input: 9 - 5 = 4
Slope: [tex]m = \frac{50}{4} = 12.5[/tex]
So
[tex]y = 12.5x + b[/tex]
L (5) = 100
So [tex]y(5) = 100[/tex], which means that when [tex]x = 5, y = 100[/tex], and we use this to find b.
[tex]y = 12.5x + b[/tex]
[tex]100 = 12.5*5 + b[/tex]
[tex]b = 100 - 12.5*5[/tex]
[tex]b = 37.5[/tex]
So
[tex]L(x) = 12.5x + 37.5[/tex]
a. Determine the value of L (13)
L when [tex]x = 13[/tex]. So
[tex]L(13) = 12.5*13 + 37.5 = 200[/tex]
Will someone please answer these problems?? I need them done ASAP!!!!!!
Answer:
Step-by-step explanation:
1. 10/15 = 2/3. Similar.
2. 101/151 ≠ 100/150. Not similar.
3. 10/20 = 7/14 = 4/8. Similar
4. 6/3 = 7/3.5 = 7/3.5 Similar
On a cruise ship there are two options for an Internet connection. The first option is a fee of $5 plus an additional $0.25 per minute. The second option cost $50 for an unlimited number of minutes. For how many minutes, m, is the first option cheaper than the second option? BRAINLIEST!!!
Answer:
m=180
Step-by-step explanation:
5+0.25m=50
-5. -5
0.25m=45
divide both terms by 0.25
m=180
with the first option you can get 180minuts or 3hours for the equivalent of the $50 option.
hope this helps :)
-52=-0.8k need a answer
Answer:
k is 65
Step-by-step explanation:
isolate the variables by dividing each side by factors that don't contain the variable
You are flying 2586 miles from San Francisco to New York.
The pilot looks at the speedometer on the plane and it reads 615 mph. This is a measure of the
a Average Speed
b Instantaneous Velocity
c Average Velocity
d Instantaneous Velocity
Answer:
Instantaneous Velocity
Step-by-step explanation:
It's instantaneous because the speedometer only shows the plane's current speed.
Due to your severe pain, the doctor tells the nurse to give you 825 mg of pain medicine every 6 hours. You also hear the nurse say that the medication comes in 250-mg tablets. How many tablets should she give you every 6 hours? (Round to tenths, if necessary.)
Answer:
3
Step-by-step explanation:
divided 825 by 250 which give you 3.3
A student is taking a true/false quiz with 16 questions. The student has not studied and has an equal chance of answering True or False on each question. What is probability that the student will answer at least 12 questions correctly?
Chance of success
0.03841 or 3.84%
Step-by-step explanation:
what single decimal multiplier would you use to decrease by 7% followed by a 20% decrease
Answer:
x 0.27
Step-by-step explanation:
if they are both decreasing then just add the two percentages together then divide by 100 to give you your decimal answer
7r+4r+10s what is the answer
Answer:
11r + 10s
Step-by-step explanation:
The attendance at a new weekly exercise class doubled each week until week 4, when it reached its maximum capacity of 24 people
Answer:
Half Maximum capacity a week 3. And the class started off with 3 people.
Step-by-step explanation: