Answer:
(−0.103371 ; 0.063371) ;
No ;
( -0.0463642, 0.0063642)
Step-by-step explanation:
Shift 1:
Sample size, n1 = 30
Mean, m1 = 10.53 mm ; Standard deviation, s1 = 0.14mm
Shift 2:
Sample size, n2 = 25
Mean, m2 = 10.55 ; Standard deviation, s2 = 0.17
Mean difference ; μ1 - μ2
Zcritical at 95% confidence interval = 1.96
Using the relation :
(m1 - m2) ± Zcritical * (s1²/n1 + s2²/n2)
(10.53-10.55) ± 1.96*sqrt(0.14^2/30 + 0.17^2/25)
Lower boundary :
-0.02 - 0.0833710 = −0.103371
Upper boundary :
-0.02 + 0.0833710 = 0.063371
(−0.103371 ; 0.063371)
B.)
We cannot conclude that gasket from shift 2 are on average wider Than gasket from shift 1, since the interval contains 0.
C.)
For sample size :
n1 = 300 ; n2 = 250
(10.53-10.55) ± 1.96*sqrt(0.14^2/300 + 0.17^2/250)
Lower boundary :
-0.02 - 0.0263642 = −0.0463642
Upper boundary :
-0.02 + 0.0263642 = 0.0063642
( -0.0463642, 0.0063642)
Help..........................
Answer:
D
Step-by-step explanation:
I'm not certain but I guess that's it
20 PTS
PLEASE HELP !!!
Answer:
88
Step-by-step explanation:
100-√81+3
or,100-√9square+3
or,100-9+3
or,100-12
•°• 88
Answer:
94
Step-by-step explanation:
100-the square root of 81+3
(the square root of something is a number multiplied by itself to get the number example √16=4 because 4x4=16)
100-9+3
91+3
94
PLEASE HELP DUE TOMORROW WILL GIVE BRAINLIEST
Answer:
y=-2x+18
Step-by-step explanation:
so, we use the format y=mx+b where m and b are numbers. b=18, and m=-2, since he SPENDS 2 dollars each day. y=-2x+18 would be your answer. remember, b is also the y intercept, so one of the points that would work would be (0, 18) and the x intercept would be when y is zero, aka 0=-2x+18 which we can solve to get (9,0)
What is the quotient? (32h12 – 48h18) ÷ –16h6
32h12 + 3h12
–2h18 + 3h24
32h12 + 3h24
–2h6 + 3h12
The quotient of this mathematical expression (32h12 – 48h18) ÷ –16h6 include the following: D. –2h6 + 3h12.
What is a quotient?In Mathematics, a quotient can be defined as a mathematical expression that is simply used to represent the division of a number (numerator) by another number (denominator).
By writing the given mathematical expression as a division of a number (numerator) by another number (denominator), we have the following:
Quotient = (32h12 – 48h18)/–16h6
Quotient = -2h6 - (-3h12)
Quotient = –2h6 + 3h12.
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Market researchers selected a random sample of people from region A and a random sample of people from region B. The researchers asked the people in the samples whether they had tried a new product. The difference between the sample proportions (B minus A) of people in the regions who indicated they had tried the new product was 0.15. Under the assumption that all conditions for inference were met, a hypothesis test was conducted with the alternative hypothesis being that the population proportion of B is greater than that of A. The p-value of the test was 0.34.Which of the following is the correct interpretation of the pp-value?If the difference in proportions of people who have tried the new product between the two populations is actually 0.15, the probability of observing that difference is 0.34.A. If the difference in proportions of people who have tried the new product between the two populations is actually 0.34, the probability of observing that difference is 0.15.B. If the proportions of all people who have tried the new product is the same for both regions, the probability of observing a difference of at least 0.15 is 0.34.C. If the proportions of all people who have tried the new product is the same for both regions, the probability of observing a difference of at most 0.15 is 0.34.D. If the proportions of all people who have tried the new product is the same for both regions, the probability of observing a difference equal to 0.15 is 0.34.
Answer:
B. If the proportions of all people who have tried the new product is the same for both regions, the probability of observing a difference of at least 0.15 is 0.34.
Step-by-step explanation:
Null hypothesis:
H0: The population proportion B = population proportion A
Alternative hypothesis:
H1: The population proportion of B > population proportion A
The P value, also called calculated probability, is that of getting test results which are at least as extreme as the results which were observed in a Statistical test. We assume the null hypothesis to be true.
Therefore if the population proportion of B = A (H0 is true), then we conclude that the probability of observing a difference of at least 0.15 is = 0.34.
Simplify the expression
3 (x+4) -2x
X+4
x+12
3x+10
7-x
3x+12
Answer:
x+12
Step-by-step explanation:
3 (x+4) -2x
Distribute
3x+12 -2x
Combine like terms
x+12
Answer:Move
11
3
to the left side of the equation by subtracting it from both sides.
30
3x-12
+
1
x-4
-
11
3
=0
Step-by-step explanation:
What happened as a result of the fall of the Western Roman Empire?
*
A. The Eastern Roman empire absorbed the territory of the former Western Roman
Empire
B.A series of new Germanic kingdoms replaced the Western Roman Empire
C.Powerful new rulers settled peasant unrest and stopped outside invasions
D.The Eastern Roman Empire also rapidly declined and dell to the outside invaders.
Answer:
nn
Step-by-step explanation:
a rectangular field is 0.45 kilometers long and 0.3 kilometers wide what is the area of the field in square meters?
Answer:135000
Step-by-step explanation:
Answer:
The field has an area of 135,000 m².
Step-by-step explanation:
We first convert the measurements from kilometers to meters by multiplying by 1000.
- - - - - - - - - - - - - Length: 0.45 km = (0.45 × 1000) m = 450 m.
- - - - - - - - - - - - - Width: - - 0.3 km = (0.3 × 1000) m = 300 m.
So the field is a rectangle 450 meters long and 300 meters wide.
To compute the are of this rectangle, we multiply its length by its width.
- - - - - - - - - - - - - - Area = 450 × 300 = 135,000 m².
so the answer is 135,000 m².
place value of 7 in 872 164
Answer:
70,000 = seventy thousand
Step-by-step explanation:
The place value of 7 in 8,72,164 is 70,000.
What is Place Value?Every digit in a number has a place value in mathematics. The value a digit in a number represents based on where it is in the number is known as place value.
Given the number 8,72,164,
find the place value by table,
number x multiplier = value
8 x 1,00,000 = 8,00,000
7 x 10,000 = 70,000
2 x 1,000 = 2,000
1 x 1,00 = 1,00
6 x 10 = 60
4 x 1 = 4
The place value of 7 is 70,000.
Hence the value of 7 is 70,000.
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what is the quotient of x^2 + 7x +12 and x +4?
Answer:
The Answer/Quotient is x+3
At 1 P.M., the total snowfall is 5 centimeters. At 4 P.M., the total snowfall is 16 centimeters. What is the mean hourly snowfall? Write your answer in simplest form as a fraction or mixed number.
Answer:
Mr. Snowbully
Step-by-step explanation:
I think the mean hourly snowfall is named Mr. Snowbully
It's a funny name!
Well, the snow would grow at a rate of 4 cm every hour so...
4
I dance I sing I am perfect I am I am a believer that I am a discoverer. PLEASE ANSWER I'LL MARK AND BRAINLIEST
Answer:
not sure if its a song or not but you do you, gg <3
Answer:
YAZZ You are amazing :> remind yourself everyday!!!
The figure shows the dimensions of a backyard
Find the area
8 yd
eccles
30 yd
15 yd
30 yd
The area of the backyard is
square yards.
Which table represents the function y = 3 x – 1?
Input x 0 1 2
Output y -1 2 5
Input x 0 1 2
Output y -1 -2 -3
Input x 2 3 4
Output y 2 4 6
Input x 1 2 3
Output y 4 7 10
Answer:
the first set of values is correct
Step-by-step explanation:
when x =0,
y = 3(0) -1
y=-1
when x =1,
y=3(1)-1
y=2
when x=2,
y=3(2)-1
y=5
Given that 5x - 8y = 33 find x when y = 1
Answer:
x = ⁴¹⁄₅ or 8.2Explanation:
5x - 8y = 33
y = 1
Insert 1 for 'y' in the equation
5x - 8(1) = 33
Remove parenthesis: (a) = a
5x - 8 · 1 = 33
Multiply 8 · 1: 8
5x - 8 = 33
Add 8 to both sides
5x - 8 + 8 = 33 + 8
Simplify
5x = 41
Divide both sides by 5
5x / 5 = 41 / 5
x = ⁴¹⁄₅
Turn the fraction into a decimal
x = 8.2
Assume you are buying a $15,000 car, with a 12 month loan at 5% interest, a net down payment of $2,500, and
a $40 (non-taxable) fee with 6% in sales tax.
What will be your monthly payment?
A. Between $1000 and $1049
B. Between $1050 and $1099
C. Between $1100 and $1149
D. Between $1150 and $1200
A car depreciates at a rate of 15% of its value annually. Carl purchased a new car for $25,000 and wants to know how many years it
will take until the car is worth a specific amount.
a) Formulate a logarithmic function that would find the number of years t it will take for the car to be worth x dollars.
Then
b) How many years will Carl have until he new car is worth about $5000?
Answer:
(a) (log X - log 25000)/log 0.85 = t
(b) about 9.9 years
Step-by-step explanation:
(a) Let X = value and t = elapsed years since purchase; X in dollars
X = 25000 x 0.85 x 0.85 x 0.85 ... with a factor of 0.85 for every year
(If you lose 15% of value, you have 85% left, right?)
So if you do it for t years, you have t as the exponent on the 0.85 factor.
[tex]X = 25000(0.85)^t[/tex] is a good equation, but not logarithmic like they ask.
[tex]log X = log 25000 + log [(0.85)^t][/tex] because the log of a product is the sum of the logs of the factors
log X = log 25000 + t*log 0.85 because the log of a power is power times log
log X - log 25000 = t* log 0.85 just algebra, subtracting from both sides
(log X - log 25000)/log 0.85 = t just algebra, dividing both sides
(b) If we let X = $5000
t = (log 5000 - log 25000)/log 0.85
= (3.69897 - 4.39794)/-0.07058
= 9.90
So t = 9.9 years is a good estimate
Carl will have approximately 5.06 years until his new car is worth about $5000.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Let V(t) be the value of the car t years after it was purchased.
We know that the car depreciates at a rate of 15% annually, so the value of the car after t years can be expressed as:
[tex]V(t) = 25000 \times (1 - 0.15)^t[/tex]
Simplifying this equation, we get:
[tex]V(t) = 25000 \times 0.85^t[/tex]
Now suppose Carl wants to know how many years it will take for the car to be worth x dollars.
We can set V(t) equal to x and solve for t:
[tex]25000 \times 0.85^t = x[/tex]
log0.85(25000) +[tex]log0.85(0.85^t)[/tex] = log0.85(x)
Since log0.85(25000) is a constant, we can subtract it from both sides of the equation:
[tex]log0.85(0.85^t)[/tex]= log0.85(x) - log0.85(25000)
Divide both sides of the equation by log0.85(0.85) = 1:
t = [log0.85(x) - log0.85(25000)] / log0.85(0.85)
Therefore, the logarithmic function that would find the number of years t it will take for the car to be worth x dollars is:
t = [log0.85(x) - log0.85(25000)] / log0.85(0.85)
b) We want to find the number of years it will take for the car to be worth $5000.
Substituting x = 5000 into the formula derived in part (a), we get:
t = [log0.85(5000) - log0.85(25000)] / log0.85(0.85)
t = 5.06
Therefore, Carl will have approximately 5.06 years until his new car is worth about $5000.
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* Required
1
Joey makes $4,000 per month after taxes. What should he budget for rent each month? *
(2 Points)
$1,120
$1,000
$14,285.71
$900
Help fill in the Punnett square
Answer:
Here is the completed punnett square
Answer:
e e
E Ee Ee
e ee ee
You are an entrepreneur and selling handmade kites. Your company Kites-R-Fun has been contacted by a customer in Alaska who wants to purchase several of your best-selling kites and wants you to ship them to her. You have already established the cost at $4 each and it's only going to cost you $8 to ship these items to Alaska. Your competitor Windy Kites sells the same items, but charges half of your price. However, if the customer buys from your competitor, she will be charged $20 in shipping costs.
Write two equations to represent the customer's total cost based on how many kites she purchases from each company where y is the total cost and x is the number of kites purchased.
1. Total cost for Kites-R-Fun *
y = 4x + 8
y = 4x + 20
y = 8x + 4
y = 8x + 20
2. Total Cost for Windy Kites *
y = 2x + 10
y = 2x + 20
y = 8x + 20
y = 20x + 4
3. If the customer in Alaska wants to buy 4 kits, who should she buy from? *
Kites-R-Fun
Windy Kites
4. If the customer in Alaska wants to buy 10 kits, who should she buy from? *
Kites-R-Fun
Windy Kites
Answer:
do you have the answers i’m taking this rn i’m gonna literally cry lol
Step-by-step explanation:
Answer:
Step-by-step explanation:
I'm not sure if I am correct or incorrect but these are my answers, I'm pretty sure they're correct but I'm not sure as I didn't turn it in yet
1. Fill in the table to find customer costs from each seller.
2. Write an equation to represent the customer's total cost to purchase from Kite-R-Fun.
Y = 4x + 8
3. Write an equation to represent the customer's total cost to purchase from Windy Kites.
Y = 2x + 20
4. Based on your table, if the Alaskan customer wants to buy 4 kites, who charges the least?
Kites - R - Fun
5. If the Alaskan customer wants to buy 10 kites, who charges the least?
Windy Kites
6. (6, 32)
7. Looking at your graph, find the solution and explain what it means in this situation
This point represented where prices have intersected
Explain
Don’t use for points or I’ll take it back and report
Answer:
answer is 27 degrees
Step-by-step explanation:
first of all interior angles of a right sided add up-to 180 degrees and you were given 2 angles already
90 + 63 + x = 180
153 -153 +x = 180 -153
x = 27
hope that helps
what is the slope of the line passing through points (x,y) and (p,q)
Step-by-step explanation:
Let (x1,y1) = ( x, y)
(x2 , y2) = (p, q)
Then
Slope (m)
= (y2 - y1) / (x2 - x1)
= ( q - y) / ( p - x)
Hope it will help :)
Whats the fraction as a whole number of 9/12??
9 ≤ c + 1.
The solution is?
Answer:
8 ≤ c or backwards c ≥ 8
Step-by-step explanation:
subtract one from 9?
Find the interest rate. You are borrowing $1,310 for 10 years and you are penalized $655 in interest.
Pls Help
Answer:
5%
Step-by-step explanation:
I (simple interest) = $655
P (principle) = $1,310
R (interest rate) = ?
T (time) = 10
I = PRT
655=(1,310)r(10)
655 = 13,000•r
13,100 13,100
r • 0.05
0.05 converted to percent is 5%
Alfredo bought a fishing pole for 60% off it’s original price of $97. If the tax was 4% ( of the sale price), how much did Alfredo pay for the fishing pole?
Answer:
40.4
Step-by-step explanation:
Well...you see, 60% of $97 is equal to 58.2. you can get this by multiplying 97 by 0.60.
so subtract 97 by 58.2 and you will get 38.8, now you will add the tax which is and extra add-on to the prices full value
and it's a 4% tax so you will add for percent to 38.8,
basically multiply 38.8 times 0.04 and you will get 1.6 which you will have to add the your amount to get 40.4.
Question 5 of 12
The orthocenter of a triangle may lie outside the triangle since the
may not intersect any side of the triangle.
A. angle bisector
B. perpindicular bisector
C. altitude
D. median
SUBMIT
jessica and sarah collect insects.Jessica has two hundred thirty four insects sarah has 2.5 times as many insects as Jessica
How many insects does sarah have?
Answer:
585
sorry if i get it wrong
Step-by-step explanation:
Sarah has 585 insects if Jessica and Sarah collect insects. Jessica has two hundred thirty-four insects Sarah has 2.5 times as many insects as Jessica
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
Jessica and Sarah collect insects. Jessica has two hundred thirty-four insects Sarah has 2.5 times as many insects as Jessica
Let x be the total insect Sarah has.
The insects Jessica has = 234
x = 2.5(234)
x = 585
Thus, Sarah has 585 insects if Jessica and Sarah collect insects. Jessica has two hundred thirty-four insects Sarah has 2.5 times as many insects as Jessica
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Karen pumped 7 gallons of water out of her pool each minute for 28 minutes. What was the total change in the amount of water in the pool?
NEED HELP ASAP!!!!! lots of points
Answer:
c
Step-by-step explanation: