Construct and interpret a 95% confidence interval to estimate the proportion of the earth that is water. Show all work. Make sure to check your conditions and state your conclusion.
1.) Randomly selected
2.) Less than 10% of population
3.) 50 (0.68)
50 (0.32)
the answer would be 2
You purchased an antique guitar for 8600. It is expected to appreciate at 2.4% annually. How long will it take the guitar to double in value
find number x if when you add 7 to it and double the result you get 19 more than x
Answer:
x = 6
Step-by-step explanation:
2x + 7 = 19
-7 -7
2x = 12
*divide both sides by 2*
x = 6
need some help please
Answer:
what help I will help yoy
Find the value of the trigonometric ratio.
(D)
Step-by-step explanation:
sin x = opp/hyp
= 40/41
Publishers of a magazine wish to determine what proportion of the magazine's 50,000 subscribers are pleased with their subscription. The publishers intend to mail a survey to 1,000 subscribers randomly selected from those who have received the magazine for 5 years or more. This introduces selection bias, since long-subscribing customers are more likely to be pleased with their subscription. Which of the following would best eliminate selection bias?
a. Mail surveys to 2,000 subscribers randomly selected from those who have received the magazine for 5 years or more.
b. Mail surveys to 1,000 subscribers randomly selected from those who have received the magazine for 1 year or less.
c. Mail surveys to 1,000 subscribers randomly selected from all subscribers.
d. Mail surveys to 1,000 subscribers randomly selected from those who have received the magazine for 5 years or more and 1,000 subscribers randomly selected from those who have received the magazine for 1 year or less.
e. Mail surveys to 500 subscribers randomly selected from a group who have received a free six-month subscription within the past year.
Answer:
d. Mail surveys to 1,000 subscribers randomly selected from those who have received the magazine for 5 years or more and 1,000 subscribers randomly selected from those who have received the magazine for 1 year or less.
Step-by-step explanation:
In the case of the publishers of the magazine, in order to avoid bias, they would adopt he approach mentioned in the above statement. That is, to consider both those that have recieved the magazine for the past five years or more as well as those who have recieve the magazine for the past one year or less.
This would help them to have a balanced outcome in the survey because all, would attend the the survey with a free mindset rather than baised mindset.
PLS HURRY! THANK YOU
A. y=(x+5)^2-1125
B. y=(x-5)^2+1125
C. y=-5(x+5)^2-1125
D. y=-5(x-5)^2+1125
Answer:
C. y=-5(x+5)^2-1125 i don't know is this is right
Answer: It’s D, y = -5 (x - 5)^2 + 1125
Step-by-step explanation:
feams.microsoft.com/_/pdf/viewer/teams/https:-21-2Fmiamidadoschools sharepoint.com - 2Fsites - 2F Section 720131254908-21 Shared20Documents-2General 21 g
2. Which of the following tables represent functions?
A. (5,0)
B. (-2,2.4)
C. (8,5)
D. (10,12)
E. (0,4)
Input
1
Output
4
2
3
3
z
Input Output
1
2 2
3
3
3
4
4
1
1
11
7. Joe was given $20 for his
$10 per week from his =
to represent this situati
Input Output
-1 2
0 2
1 3
5 3
Input Output
-4 3
0
2
2. 12
4
7
O A. S(w) = 10w - 20
O B. S(w) = 10w + 20
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B. I and IV only
OC. III and IV only
D. I, III, and IV only
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Answer:
D
Step-by-step explanation:
can yall help and stop ignoring me plz i need help i have 10 min left!
Answer:
The mean score would decrease more than the median score
Step-by-step explanation:
An online health and medicine company claims that about 50% of Internet users would go to an online sight first for
information regarding health and medicine. A random sample of 1318 Internet users was asked where they will go for
information the next time they need information about health or medicine; 606 said that they would use the Internet. Test
the claim that less than 50% of Internet users get their health questions answered online.
Answer:
The claim that less than 50% of internet users get their health questions answered online is correct, given that according to the survey, 45.98% of people do.
Step-by-step explanation:
Since an online health and medicine company claims that about 50% of Internet users would go to an online sight first for information regarding health and medicine, and a random sample of 1318 Internet users was asked where they will go for information the next time they need information about health or medicine; 606 said that they would use the Internet, to test the claim that less than 50% of Internet users get their health questions answered online, the following calculation must be performed:
1318 = 100
606 = X
606 x 100/1318 = X
60600/1318 = X
45.978 = X
Therefore, the claim that less than 50% of internet users get their health questions answered online is correct, given that according to the survey, 45.98% of people do.
sellus
Find the expected value of the winnings
from a game that has the following
payout probability distribution:
Payout ($)| 0 2 4 8 10
Probability 0.35 0.2 0.1 0.2 0.15
Round in the nearest hundredth
Answer:
3.9
Step-by-step explanation:
Given the data:
Payout ($) (x) : 0 2 4 8 10
Probability p(x) : 0.35 0.2 0.1 0.2 0.15
The expected winning ; E(X) = Σ(x * p(x))
Σ(x * p(x)) = (0*0.35)+(2*0.2)+(4*0.1)+(8*0.2)+(10*0.15)
= 0 + 0.4 + 0.4 + 1.6 + 1.5
= 3.9
50 POINTS !!
PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.
Answer:
c = 9
Step-by-step explanation:
8.1^2 + 2.9^2 = 74.02
square root 74.02 is 8.60 round up and its 9
Find the inverse of the function.
Y = x + 8
Answer:
Im almost certain its x-8=y
Step-by-step explanation:
Answer:
[tex]f - 1(x) = x + 8[/tex]
i hope it helps
What is the distance between (2, -4) and (9,-4)?
8 units
11 units
0 units
07 units
Answer: 7 units
Step-by-step explanation:
Answer to this question
Answer:
555.555556 WHERE 1 YARD IS EQUAL O 30 FOOT DIVIDE IT BY 30 ANS IS
Step-by-step explanation: 555.5555556/30 = 18.5185 IS THE ANSWERE IN YARDS OF 1500 FT3
speed getsa u brainle
Answer:
ye?
Step-by-step explanation:
why is the slope between any two points on a straight line always the same?
Answer:
because it never changes.
anyone know this click to see links will be reported
Which is better 4:3 odds or 3:4 odds? Why?
Answer:
no problem?
Step-by-step explanation:
Which shows the number 94.076 written out in words?
Respond quick
Answer:
D) ninety-four and seventy-six thousandths
Step-by-step explanation:
Which rules define the function graphed below? Edge
Answer:
B
Step-by-step explanation:
In the first part for every x, y is the value of x plus 2, while in the second part for every x. y is 5
3a²b and 3ab² are like terms true or false
Step-by-step explanation:
false.
3a²b≠3ab².
If a is 3 and b is3 it is not equal
What is the vertext of the following parabola: x^2 - y + 6x + 8 = 0
Answer: y=(x+3)2−17
Step-by-step explanation:
you are wearing a pair of cargo pants with six pockets. you've put $10 in one of the pockets, but you cannot remember which one. after checking two pockets without success, what is the probability that the money will be in the next pocket you check?
A. 1/8
B. 1/6
C. 3/5
D. 1/4
Answer:
1/4
Step-by-step explanation:
So lets go over our information
We know there are 6 pocket
1 of them has 10 dollars
2 have been checked
There are 4 more to check
There is a 1 in something chance of the next pocket having 10 dollars.
The key here is, 2 have already been checked.
This means there is a 1/4 chance of the next pocket having 10 dollars.
Answer:
B(1/4)
Hope this helps!
Solve 8 = 2x +4.(1 point)
01) x = -4
O2) x = -1
3) x = 0
4) x = 7
Answer:
x=2, should be the correct answer but that isnt a choice
Step-by-step explanation:
8=2x+4
4=2x
2=x
x=2
The amount of gas that a helicopter uses is directly proportional to the number of hours
spent flying. The helicopter flies for 2 hours and uses 24 gallons of fuel
. Find the number of
gallons of fuel that the helicopter uses to fly for 5 hours,
Answer:
60 gallons
Step-by-step explanation:
We can create a ratio for this. If we consider 2 as the 1 in the ratio, we have a ratio of 1 : 2.5. Therefore, we just need to multiply 24 by 2.5, which equals 60.
Consider the function f(x) = 2x and the function g(x).
g(t) = f(x + 4)
= 2( + 4)
How will the graph of g(x) differ from the graph of Ax)?
OA
The graph of g(x) is the graph of Ax) shifted 4 units to the left.
OB The graph of g(x) is the graph of f(x) shifted 4 units upward.
C. The graph of g(x) is the graph of f(x) shifted 4 units downward.
D. The graph of g(x) is the graph of Ax) shifted 4 units to the right..
Answer:
c
Step-by-step explanation:
c
Answer:
a
Step-by-step explanation:
Pls help I need a good grade I’ll brainlest
Answer:
Step-by-step explanation:
A.
C.
HAVE A NICE DAY
WILL GIVE BRAINLST :)
what is the surface area of this rectangular pyramid
Answer:
Hello! answer: 75
Step-by-step explanation:
5 × 5 = 25 for a square
for a triangle 5 × 5 = 25 25 ÷ 2 = 12.5 12.5 × 4 = 50 25 + 50 = 75 therefore the total area is 75 HOPE THAT HELPS!