Answer:
10 + 78.567 = 88.567
Step-by-step explanation: thank you
What is the chance that a given car has a problem with the fuel line if it is make D? A. 0.0078% B. 0.0110% C. 0.0080% D. insufficient data
Answer:
0.0110%
Step-by-step explanation:
Answer:
B 0.0110%
Step-by-step explanation:
An economist studying fuel costs wants to estimate the mean price of gasoline in her state on a certain day. On that day, she takes an SRS of 121212 gas stations and finds the sample mean price (in dollars per gallon) is \bar x=\$2.29 x ˉ =$2.29x, with, \bar, on top, equals, dollar sign, 2, point, 29 with a standard deviation of s_x=\$0.20s x =$0.20s, start subscript, x, end subscript, equals, dollar sign, 0, point, 20. The prices in the sample are roughly symmetric with no distinct outliers. Based on this sample, which of the following is closest to a 90\%90%90, percent confidence interval for the mean price of gasoline that day in her state?
Answer:
($2.19,$2.39)
Step-by-step explanation:
khan
Based on this sample, the confidence interval which is closest to a 90%, for the mean price of gasoline that day in her state is ($2.19, $2.39).
What is random sample?Random sample is the way to choose a number or sample in such a manner that each of the sample of the group has an equal probability to be chosen.
When the sample size is less than 30, the formula which is used is,
[tex]\overline x\pm t.\dfrac{s}{\sqrt n}[/tex]
Here, n is the sample size, [tex]\overline x[/tex] is the sample mean, s is the standard deviation.
Economist, takes an SRS of 12 gas stations. The sample size for the given problem is 12,
[tex]n=12[/tex]
Thus, degree of freedom,
[tex]df=12-1\\df=11[/tex]
In the t table, for df 11, the value of t is 1.796.
An economist studying fuel costs wants to estimate the mean price of gasoline in her state on a certain day.
On that day, she takes an SRS of 12 gas stations and finds the sample mean price (in dollars per gallon) is,
[tex]\bar x=2.29[/tex]
With a standard deviation of
[tex]s_x=0.20[/tex]
Put the values in the above formula,
[tex]2.29\pm 1.796.\dfrac{0.20}{\sqrt 12}\\2.29\pm 0.1037\\2.29+0.1037=2.3937\\2.29- 0.1037=2.1863[/tex]
Thus, based on this sample, the confidence interval which is closest to a 90%, for the mean price of gasoline that day in her state is ($2.19, $2.39).
Learn more about the random sample here;
https://brainly.com/question/17831271
PLEASE HELP WILL GOVE BRAINLY
Answer:
25.3
Step-by-step explanation:
if its just reflections, i dont think the length has changed at all,,
Reference angle of 2/15 pi
Answer:
Add
2
π
to
−
15
π
2
.
−
15
π
2
+
2
π
The resulting angle of
−
11
π
2
is coterminal with
−
15
π
2
but isn't positive. Repeat the step.
−
11
π
2
Add
2
π
to
−
11
π
2
.
−
11
π
2
+
2
π
The resulting angle of
−
7
π
2
is coterminal with
−
15
π
2
but isn't positive. Repeat the step.
−
7
π
2
Add
2
π
to
−
7
π
2
.
−
7
π
2
+
2
π
The resulting angle of
−
3
π
2
is coterminal with
−
15
π
2
but isn't positive. Repeat the step.
−
3
π
2
Add
2
π
to
−
3
π
2
.
−
3
π
2
+
2
π
The resulting angle of
π
2
is positive and coterminal with
−
15
π
2
.
π
2
Step-by-step explanation:
zorry if im wrong
The price of a video game system dropped by 18%. What is the current price if it used to be $140?
Answer:
$114.80
Step-by-step explanation:
Multiply 18% and 140 to find the drop price.
.18 x 140= $25.20 now subtr. this from the original price
$140.00-$25.20=$114.80 is the sale price
Which of these animals swims at the lowest altitude?
emperor penguin: -1,500 feet
sperm whale: -6,500 feet
leatherback turtle: -4,200 feet
Weddell seal: -1,970 feet
Answer:
Sperm whale
Step-by-step explanation:
6500 feet is the greatest depth of the four
What are the coordinates of the image of AABC with center (0,0) and a scale factor of 3? Drag numbers to complete the coordinates.
Numbers may be used once more than once, not at all
Answer:
b=(14,8) A stays the same at (2,2) and C=(2,14)
Step-by-step explanation:
Answer:
Step-by-step explanation:
a(6,6) b(12.18) c(18,6)
identify the area of a regular decagon with side legnth 5 m
Answer: The area is 81.25 m²
A teacher places 10 marbles in a bag.
- 2 blue marbles
- 3 red marbles
- 5 yellow marbles
A student draws one marble from the bag, does not replace it, then draws another marble from the bag. What is the probability that the first marble will be yellow and the second marble will be red?
Step-by-step explanation:
Since they do not replace it the total amount of marbles are the same
5 x 1/9 x 8
please help
Answer:
4 4/9
Step-by-step explanation:
The school buses at a middle school each hold 38 students. The school has, b, buses.
Write an equation that shows the total number of students, s, that can be carried by all of its buses.
Answer:
38bs
Step-by-step explanation:
multiply the number of students that each bus can hold by the no of buses 38s×b=38bs
y = x - 6
5x - 2y = -30
Answer:
(-14,-20)
Step-by-step explanation:
hope it helps!
Answer:
x=-14, y=-20
Step-by-step explanation:
help with math please will give brainliest
Answer:
I will helo you if you help mr
Step-by-step explanation:
Deal?
A rectangular prism has a legnth of 9 in., a width of 4 in., and a height of 1 1/2 in.
The prism is filled with cubes that have edge lengths of 1/2 in.
How many cubes are needed to fill the rectangular prism?
Enter your answer in the box.
TO FILL THE RECTANGULAR PRISM, _____ CUBES ARE NEEDED
Answer:
432 cubes
Step-by-step explanation:
V = 9 x 4 x 1.5 = 54 in³
V = 1/2 x 1/2 x 1/2 = 1/8 in³
54/(1/8) = 432 cubes
Find the value of a, b, and c.
x2 – 5x – 14 = 0
Helpppp
Answer:
a = 1
b = -5
c = -14
Step-by-step explanation:
x² - 5x - 14 = 0
where,
a = 1
b = -5
c = -14
-TheUnknownScientist
Answer:
1
-5
-14
Step-by-step explanation:
hope it's helpful
Which of the following functions has an exponential growth of 3%?
A. f(x) = 1500(0.03)^x
B. f(x) = 2500(3)^x
C. f(x) = 975(1.03)^x
D. f(x) = 300(0.97)^x
In the Figure, △ABC ≅ △FDE
Which of these is a simplified form of the equation 15x + 4 = 5 + 3x + 1x? (2 points)
0 3x = 9
0 3x = 11
O 11x = 9
0 11x = 1
Answer:
11x=1
Step-by-step explanation:
15x+4=5+3x+1x Bring everything with an x in front of it to the left side
15x-3x-1x+4=5 Simplify the x values
11x+4=5 Bring the 4 to the right side
11x=5-4
11x=1
There is a 3 out of 20 chance that you can win a game. How many "wins" would you predict if you played the game 50 times?
Answer:
7.5
Step-by-step explanation:
The probability of winning = 3 out of 20 ;
P(winning) = 3/20
Predicted Number of winnings if game is played 50 times ;
P(winning) * number of games played
(3 /20) * 50
0.15 * 50
= 7.5
Predicted Number of winnings = 7.5
Answer:7.5
Step-by-step explanation:
first you want to clarify the numbers which is 3 and 20 and your chance is 3/20 which equals 7.5 but round to the nearest whole number so 8,
g(x) = -4 log2 (x + 2) +1
Answer: -2
x=-G-1= -2
4log(2)
Step-by-step explanation:
Find the volume of the figure
Answer:
384
Step-by-step explanation:
L times W times H
Problem ID: PRABEAF4
Suppose that during its flight, the elevation e (in feet) of a certain airplane and its time t, in minutes since takeoff, are related by a linear equation. Consider the graph of this equation, with time represented on the horizontal axis and elevation on the vertical axis. For the following situation, decide if the slope is positive, zero, or negative:
The plane is cruising at an altitude of 37,000 feet above sea level.
Find l.
10 in.
l
b = [?] in.
6 in.
Answer:
By applying Pythagoras theorem
Answer is √[109] inch
A health-food store owner buys new products for his store by borrowing against a credit line of $4,500 from one of his wholesale suppliers. He is usually given 9 months to pay the money back. The store owner borrows the full amount and is told by the supplier that his monthly payments will be $600 a. How much did the distributor pay back altogether? How much in interest did the distributor pay for the loan?
Answer:
Loan Amount= $4500
Monthly Payment= $600
9 months= $600*9= $5400
Interest = $5400-$4500= $900
find the area of the figure
rational number and irrational number
Answer:
Rational numbers are the numbers that can be expressed in the form of a ratio (P/Q & Q≠0).
Irrational numbers cannot be expressed as a fraction. But both the numbers are real numbers and can be represented in a number line.
Step-by-step explanation:
Body mass index, of 20-year-old men is normally distributed with a mean of 23 and a standard deviation of 3.8. Twenty-year-old Allan's BMI has a z-score of 1.25. What is Allan's BMI?
Answer:
Allan's BMI is 5.05
Step-by-step explanation:
Answer:
The correct answer is 27.75
Step-by-step explanation:
1.25•3.8+23 is the formula
1.25•3.8=4.75
4.75+23=27.75
So 27.75 is your answer
Kayla did her homework as soon as she got home from school, it took her 2/3 of an hour, how many minutes did it take her to do her homework? you need a step by step explanation
Answer:
40 minutes
Step-by-step explanation:
there are 60 min in an hour. 60/3= 20. That Is 1/3 of an hour. 20*2= 40. That is 2/3 of an hour.
Find the slope between two points:
(-2, 0) and (-9, 8)
Answer:
y = -1.14286x - 2.28571 (slope of the line is -1.14286)
Step-by-step explanation:
How do we show that two lines are parallel when using slope? How do we show they are perpendicular when using slope?
Answer:
QUESTION:
How do we show that two lines are parallel when using slope? How do we show they are perpendicular when using slope?
ANSWER:
How to determine if a line is a parallel perpendicular or neither?
The slopes of parallel lines are equal, and the slopes of perpendicular lines are opposite reciprocals. This is a worked example of determining whether given lines are parallel or perpendicular.
Step-by-step explanation:
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