The statements that are true are:
- Another random sample of 20 students is likely to have a mean between 57 and 65 inches
- Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
Options B and E are the correct answer.
What is a mean?It is the average value of the set given.
It is calculated as:
Mean = Sum of all the values of the set given / Number of values in the set
We have,
a.
The median height of the sample must be between 59 and 63 inches.
This statement cannot be determined based on the given information.
The MAD provides information about the variability of the data, but not necessarily about the location of the median.
b.
Another random sample of 20 students is likely to have a mean between 57 and 65 inches.
This statement is likely to be true.
Since the sample mean is 62 inches and the MAD is 2 inches, it is reasonable to expect that another random sample of the same size would have a similar mean, within a few inches.
c.
The mean height of these 20 students is likely to be the same as the mean height of all students in the district.
This statement is uncertain.
The sample mean can be a good estimate of the population mean if the sample is representative, but we cannot be certain without more information about the sampling method.
d.
The mean height of these 20 students is likely to be the same as the mean height of a second random sample of 20 students.
This statement is uncertain.
The mean of a second random sample of the same size could be different due to random sampling variation.
e.
Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
This statement is likely to be true.
Generally, larger sample sizes tend to provide more accurate estimates of population parameters, as they are less affected by random sampling variation.
Thus,
The statements that are true are:
- Another random sample of 20 students is likely to have a mean between 57 and 65 inches
- Elena would be more likely to get an accurate estimate of the mean height of the population by sampling 40 people instead of sampling 20 people.
Learn more about mean here:
https://brainly.com/question/23263573
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Please help me whith this
Express the area of the entire triangle?
What is the area?
Answer:
2x+21
Step-by-step explanation:
Area=Base*height
(x+7)*(x+3)
x*x=2x
7*3=21
2x+21
Answer:
Area=Base*height
(x+7)*(x+3)
x*x=2x
7*3=21
2x+21
please help me im begging you :(( show ur work
Answer:
A
Step-by-step explanation:
first I put 3 in for all the a's then I just completed the equation.
10 EXTRA POINTS!!!! ILL GIVE BRAINLIST! PLEASE HELP ASAP
Step-by-step explanation:
2a :
Perimeter of the rectangle
=(8+6+8+6)cm
=28 cm
Perimeter of the yard
=28 (3m/2cm) cm
=28 (300cm/2cm) cm
=28x150 cm
=4200cm
=42m
Therefore, he will need 42m of fencing
2b:
Size of the garden
=(1/3)(6)(8)(150) m^2
=2400 m^2
Y=4x +5 y=x -4 a (3, 17) b (-3, -7) c (-3, 7) d (3, 7)
Answer:
(-3, -7)
Step-by-step explanation:
y = 4x + 5
y = x - 4
add 4 to both sides of the second equation to get y + 4 = x
plug that back into the equation to get y = 4(y + 4) +5
distribute to get y = 4y + 16 + 5
combine like terms y = 4y + 21
subtract 4y on both sides to get -3y = 21
divide both sides by -3 to get y = -7
plug -7 into the second equation to get -7 = x - 4
add 4 on both sides to get -3 = x
therefore (-3, -7)
The first angle in a quadrilateral is 150 degrees. The second angle in the quadrilateral is 30 degrees.
The other two angles are congruent.
What are the angle measurements, in degrees, of angle 3 and angle 4?
Answer:
angle three is 30 degrees (depending on what kind of quadrilateral it is)
angle four is 150 degrees
Step-by-step explanation:
150+30
180 and if the other two are congruent meaning equal too
than they must also be 180 degrees in totale on the other side as well.
A tent in the shape of a triangular prism is made using the following piece of fabric. Find the surface area of the fabric. Explain your reasoning. (PLEASE HELP ME AND PLEASE SHOW YOUR WORK/REASONING)
Answer:
..............................
Answer:
area = 85.84 ft²
Step-by-step explanation:
large rectangle area = 6 x 12 = 72 ft²
2 triangles area = 2(4 x 3.46 x 0.5) = 13.84 ft²
72 + 13.84 = 85.84 ft²
plese help me with question.
Answer:
c
Step-by-step explanation:
You can go ahead and emilminate a and d because there are no 4.6.Then you can emilminate b because the quartiles must be even and 4.7 and 6 are not even
A rectangular prism has 10 layers with 12 cubes in each layer. What is the volume of the rectangular prism in cubic cm? I NEED HELP HURRY
Ok I know i was told it was false on the last one but I still don’t really understand the answer tho
Answer:It’s false
Step-by-step explanation:
because it goes over 7 feet and they wanted exactly 7 feet
HI! I really need help (no links!) ignore my answer.
Your friend incorrectly factors the expression below as 6x(3-2xy). Factor the expression below correctly. What error did your friend make? 18x-12xy
Answer:
6x(3 - 2xy) = 18x - 12x²y
Step-by-step explanation:
My friend did -12xy instead of -12x²y
6x × 2xy = 12x²y
Answer:
Read explanation
Step-by-step explanation:
Your friend forgot to take the x out of 12xy when they factored it. when you factor out the 6x, you should write the equation as 6x(3-2y)
Andrew is driving to visit his grandmother. He drove 171 miles in 3 hours. What was his average rate of travel for the trip?
If Andrew drives 6 more hours at the same rate, what is the total number of miles traveled for the whole trip?
the answer would be
3hr = 171 miles
Average 57 miles per hour
if he drives 6 more it would be 513 miles in total
Good luck im not 100% sure tho
Avery can sweep the deck in 5 minutes and Madeline can do it in 7 minutes. How long will it take them to do it together?
Answer:
12 minutes
hope that helps
Step-by-step explanation:
Jackson is able to craft in Minecraft A cake is crafted from a recipe that requires 3 milk, 2sugar, 1egg and 3wheat. If Jackson crafts 4 cakes how many of each resources does he need?
Answer:
Jason needs: 12 milk, 8 sugar, 4 eggs, and 12 wheat.
Step-by-step explanation:
multiply every number by 4.
Answer:
12 mills 8 sugars 4 eggs 12 wheat
Step-by-step explanation:
Equation of the line of best fit:y=
Correlation coefficient: r=
Answer:
good night
Step-by-step explanation:
fdgvggggfenjejdndnrndn
A clothing store uses a markup of 60% on all items they purchase to sell. What is the retail price of a pair of shoes that originally costs $350?
Answer:
560
Step-by-step explanation:
i added 6p percent
Answer:
350, percentage increased by 60% (percent) of its value = 560
Look at pics below to answer the questions
Answer:
it wont load the pic
Step-by-step explanation:
Answer:
the first one is 3/10 and I dont know about the second one
Step-by-step explanation:
HELP ME PLEASEEEEEEEE
Answer:
It should be around 128 cm.
Step-by-step explanation:
Answer:
31.98
Step-by-step explanation:
D=(2)(√Aπ)
lol umm that’s what goggle said...
could someone please help me with this?
Whats is 7 = 12v - 24?
Answer:
To the nearest tenth: v = 2.6
To the nearest hundredth: v = 2.58
Fraction form = 31/12
Step-by-step explanation:
1. Add 24 to both sides to cancel it out on the right
7 = 12v - 24
+24 +24
2. Divide each side by 12
31 = 12v
31/12 = 2.5833333
12/12 = 1v = v
v = 2.583333
What is the measure of ∠DGH?
A. 70 degrees
B. 80 degrees
C. 90 degrees
D. 100 degrees
Please help and explain how I can do this on my own...
an ice cream cone that is 4 inches tall has an opening that is 8 inches across. Find the volume of the cone
Answer:
around 67.02
Step-by-step explanation:
pls brainliest, the other answer was for a 2D shape
Please help! What is -(1/2) to the fourth power?
Answer:
1/16
/20char
/20char
/20char
/20char
/20char
The perimeter of an equilateral triangle with side s is 3s. Diana is making a decorative pillow for her living room. The pillow is shaped like a triangle with lace around the edges. Each side of the pillow is 7 inches long.
What is the perimeter of the pillow?
Answer: 21 inches
7+7+7
Need help asap
20 points
Answer:
Caroline earns more money working for the smiths
Step-by-step explanation:
Btw this answer is only worth 10 points.
Answer: Caroline earns more money with the smiths
Step-by-step explanation:
Smiths: 6.50 per hour
Nelsons: 6.25 per hour
now that you have this data it is supposed to be self- explanatory.
Hope this helps!!
please help I need it, will give brainliest
A girl's feet are negative 2 over 4 yards from the surface of a pool. A boy's feet are negative 3 over 4 yards from the surface of the pool. Determine whose feet are closer to the surface.
The girl's feet are closer to the surface of the pool because negative 2 over 4 > negative 3 over 4.
The boy's feet are closer to the surface of the pool because negative 2 over 4 > negative 3 over 4.
The girl's feet are closer to the surface of the pool because negative 2 over 4 < negative 3 over 4.
The boy's feet are closer to the surface of the pool because negative 2 over 4 < negative 3 over 4.
Answer:
They’re the same close
Step-by-step explanation:
because when they go it equals they’re the same :p
Answer:
1st Choice
Step-by-step explanation:
Trust me it is the 1st one. :) If it is correct please mark me the brainiest. :D NP
Please help me thanks
Answer:
A
Step-by-step explanation: