The student is correct in saying that "systematic random sample" is applied, since the rule is "select every 10th ticket". However, this does not represent the population because those who attend a dog show are very likely to be dog lovers. This leaves out cat lovers or any other type of pet. It may be possible that someone is a cat lover but they're at the dog show (due to their spouse pulling them along), but it's probably not that common. We say that people who pick dogs as their favorite would be over-represented, while any other pet would be under-represented if they were represented at all.
A better way to get a sample would be to go to a pet store and have every 10th purchase be selected for a survey. To entice customers to participate in the survey, it would be helpful to offer a discount, free product, or a chance to win a prize. Otherwise, the customer may ignore the survey and that could likely lead to bias.
i will give extra points please help
Answer:
7
Step-by-step explanation:
3 + 4 = 7.
So, therefor, x = 3
3. Nutrition labels. The nutrition label on a bag of potato chips says that a one ounce (28 gram) serving of potato chips has 130 calories and contains ten grams of fat, with three grams of saturated fat. A random sample of 35 bags yielded a sample mean of 134 calories with a standard deviation of 17 calories. a. Calculate the 95% confidence interval of for this random sample. Then interpret this interval.
Answer:
The 95% confidence interval of for this random sample is between 128.16 calories and 139.84 calories. This means that we are 95% that the mean number of calories for all bags of potato chips is in this interval.
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 35 - 1 = 34
95% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 34 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.95}{2} = 0.975[/tex]. So we have T = 2.0322
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 2.0322\frac{17}{\sqrt{35}} = 5.84[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 134 - 5.84 = 128.16 calories
The upper end of the interval is the sample mean added to M. So it is 134 + 5.84 = 139.84 calories
The 95% confidence interval of for this random sample is between 128.16 calories and 139.84 calories. This means that we are 95% that the mean number of calories for all bags of potato chips is in this interval.
I need help I’ll rate u good this is a lot of points
Answer:
1)x=71 2) =137
Step-by-step explanation:
1) 180-32=148 you minus it from 180 because the angles on a straight line add up to 180
2x+6=148
2x=142
x=71
2) 180-39=141
x+4=141
x=137
WILL MARK BRANIEST IF RIGHT
Ok.
1. g(7) = 9
So, f(9) = 0
2. f(3) = 9
So, g(9) = 4
3. f(2) = 5
So, f(5) = 8
4. g(8) = 8
So, g(8) = 8
Done.
Answer:
Step-by-step explanation:
composite functions, but just think of it as one function.. that does it's thing and then feeds into another function...
so g(x) starts it.. and gets a 7 and outputs a 9
then f(x) gets the 9 from g(x) and outputs a )
so f(g(7)) = 0
next f(x) gets a 3 and outputs a 9
then g(x) gets that 9 and outputs a 4
so g(f(3)) = 4
next f(x) gets a 2 and outputs a 5
then then next f(x) gets that 5 and outputs an 8
f(f(2) ) = 8
next g(x) gets an 8 and outputs an 8
the next g(x0 get that 8 and outputs another 8
kinda boring at 8 ... same ol same ol :P
g(g(8)) = 8
Help meeeeee pleaseeeee
Answer: it’s should be -300
Step-by-step explanation:
Which number line shows the solution set for 10-3)=9
++
-12 -9
+
-6-3
3
07
+
9
+
12
+
-12 -9
+++
-6 -3 0 3
6
0)
12
-12 -9
-6
+
-3 0
+
3
+
6 9
12
+
-12
-9
-6
+
-3
to
3
6
00
12
Answer: See if you can use a picture...I can't understand your question.
Step-by-step explanation:
Which of these measures would give a triangle?
Answer:
b
Step-by-step explanation:
b because the angles of a trinagle are accurate for the cm. And because the angles of traingles are small.
simplify the inequality
Answer:
2x + 4 > 14
2x > 10
x > 5
Answer:
C.x>5
Step-by-step explanation:
2x+4>14
2x>10
x>5
Hope this helps! :)
At a picnic, hamburgers and hotdogs were consumed in the ratio 7 to 4. If 41 hamburgers were consumed, how many hot dogs were consumed ?
Q12
A woman needs to work out how long it will take to drive to York.
20
G
She checks the journey on a website.
The distance from her house to York is 80 miles.
20 miles of the journey are through roadworks with a speed restriction of 40mph.
She should drive the rest of the journey at an average speed of 50mph
Answer:4.8
Step-by-step explanation:
helppppppt .........
Answer:
104 degrees
Step-by-step explanation:
360-76(2)= 208
208 divided by 2= 104 degrees
If a=7 and b=13, what is the number of even positive integers less than ab?
Answer:
45
Step-by-step explanation:
Martha Rose decides to investigate a flag
• height/width =3/5
• There are 7 red stripes and 6 white stripes, all of which have the same height, the hoist.
• The height of the blue field equals the height of seven stripes.
height of the blue field/width of the blue field = 2/3
The height of one stripe is what fraction of the height of the entire flag?
The height of the blue field is what fraction of the height of the flag?
Answer:
what subject is this?
Step-by-step explanation:
I cant really tell what subject this is
REAL ANSWERS ONLY
Rudy has arranged to buy a car for $10,240. He has a $3000 trade-in allowance and will make a $2000 down payment. He will finance the rest with a 3-year auto loan at 3.4% APR.
What is the total amount of interest he will pay? Round your answer to the nearest dollar.
$288
$279
$271
$188
Answer:
271
Step-by-step explanation:
Answer:
$279
explanation:
Find the surface area of the prism. centimeters 7 17 8 15
Answer:
400 cm²
Step-by-step explanation:
1/2x2x15x8=120
17x7=119
7x8=56
15x7=105
120+119+56+105=400
The total surface area of a given prism is 400 cm².
What the surface area of a prism?To find the surface area of any kind of prism we use the general formula. The total surface area of a prism is the sum of lateral surface area and area of two flat bases.
The total surface area of a Prism = (2 × Base Area) + (Base perimeter × Length).
Here, Base area = 1/2 ×Base×Height
= 0.5×8×15
= 60 cm²
Base perimeter = 15+8+17
= 40 cm
Now, total surface area = 2×60+(40×7)
= 120+280
= 400 cm²
Therefore, the total surface area of a given prism is 400 cm².
To learn more about the surface area of a prism visit:
https://brainly.com/question/28016184.
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Item 3
Find the surface area of the prism?
The surface area of the prism is 108 m².
What is Surface Area?The area of a three dimensional object on it's outer surface is called the surface area of the object.
Given is the figure of a triangular prism.
Triangular prism consists of two triangular bases and three rectangular lateral faces.
Triangular base is right triangle.
Surface area of prism = area of bases + area of lateral faces
Area of a triangular base = [tex]\frac{1}{2}[/tex] × base × height
= [tex]\frac{1}{2}[/tex] × 4 × 3
= 6 m²
Area of two triangular bases = 2 × 6 = 12 m²
Area of a rectangle = length × width
Area of rectangular faces = (8 × 5) + (8 × 4) + (8 × 3)
= 40 + 32 + 24
= 96 m²
Total surface area = 12 m² + 96 m² = 108 m²
Hence the total surface area of the prism is 108 m².
Learn more about Surface Area here :
https://brainly.com/question/28016184
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Which of the following is a valid step in the solution of 4√2x + 4√x + 3 = 0?
Answer:
is D and the second question is C
explanation:
Answer:
d and c
Step-by-step explanation:
1. Which expression has a value that is
more than its base?
A. (4/5) to the 3rd power
B. (2/3) to the 4th power
C. 5 to the 3rd power
D. (1/2) to the 2nd power
You would burn about 200 cal by walking for 60 minutes about how many calories would you burn if you walk for 15 minutes
Answer:
50 cal
Step-by-step explanation:
60 divided by 15 = 4 200 divided by 4= 50 cal
if u need more detail tell me.
What’s the equation of the line in fully simplified slope-intercept form
Answer:
y=-1/2x-3
Step-by-step explanation:
The line goes down 1 and over 2, and has a y-intercept of -3.
A 40 litres pail of paint costs $34. How much does 1 litre of paint cost?
Answer:
85 cents
Step-by-step explanation:
34÷40= .85
adding characters to get to 20
if agnete usually drinks three 8 oz cups (80 mg) of drip coffee every day how many grams of caffeine will she consume in a week
Answer
80oz
Hope
it helps
Agnete consumes 1.68 grams of caffeine in a week.
What is a unit rate?It is the quantity of an amount of something at a rate of one of another quantity.
In 2 hours, a man can walk for 6 miles
In 1 hour, a man will walk for 3 miles.
We have,
We know that Agnete drinks 3 cups of drip coffee every day, and each cup contains 8 oz of coffee, which is equivalent to 80 mg of caffeine.
To find out how many grams of caffeine Agnete consumes in a week, we can start by calculating the total amount of caffeine she consumes in a day:
Total caffeine in a day.
= 3 cups x 80 mg/cup
= 240 mg
Then, we can multiply this value by 7 to find the total amount of caffeine she consumes in a week:
Total caffeine in a week = 240 mg/day x 7 days/week = 1680 mg
To convert milligrams (mg) to grams (g), we divide by 1000:
Total caffeine in a week = 1680 mg / 1000 = 1.68 g
Therefore,
Agnete consumes 1.68 grams of caffeine in a week.
Learn more about unit rates here:
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One triangle on a graph has a vertical side of 3 and a horizontal side of 4. Another triangle on a graph has a vertical side of 9 and a horizontal side of 12. Could the hypotenuses of these two triangles lie along the same line? (4 points)
The cost of 5 dresses and 2 belts is $48. The cost of 3 dresses and 2 belts is $32. Find the cost of a dress and a belt. Let x denote the cost of a dress and y denote the cost of a belt.
A: x = $8, y = $4
B: x = $5, y = $4
C: x = $7, y = $10
D: x = $4, y = $5
Step-by-step explanation:
• 5X + 2Y = 48
• 2Y = 48 - 5X
let's use this and replace it on the second equation
• 3X + 2Y = 32
• 3X + 48 - 5X = 32
• 3X - 5X = 32 - 48
• -2X = -16
• X = 8
now use the X value we found to find the Y
• 5X + 2Y = 48
• 5*8 + 2Y = 48
• 40 + 2Y = 48
• 2Y = 48-40
• Y = 8/2
• Y = 4
A: x = $8, y = $4
correct answers only please!!
Answer:
7
Step-by-step explanation:
The distance between points A and B is 7.
Have a great day! :)
and can I please have brainliest?
Simplify V200 *PLEASE HELP FAST!*
Answer:
the last one
Step-by-step explanation:
√ 100 √ 2
√ 10 √ 10
10 √ 2
Ana completed 40% of her homework assignment. her assignment contain 30 math problems. how many problems does Ana still need to complete?
Answer:
18 assignments left
Step-by-step explanation:
If my answer was wrong then im sorry
100%-40%=60%×30÷100=18
What is the value of r
NEED HELP ON THIS ASAP
Answer:
its 12 i think because if A D is 5 E B looks about double that so i think its 12
Step-by-step explanation:
HELP ME IM SCREAMING ETERNALLY
Answer:
Option (C) is not equal to 5/9
Answer:
C is incorrect
Step-by-step explanation:
A: 5 * 2 = 10 9 * 2 = 18
B: 5 * 4 = 20 9 * 4 = 36
C: 5 * 6 = 30 9 * 6 = 54
D: 5 * 7 = 35 9 * 7 = 63
E: 5 * 10 = 50 9 * 10 = 90
Hope this helped!