Matilda was curious if sample interquartile range (IQR) was an unbiased estimator of population IQR. She placed ping pong balls numbered from 000 to 323232 in a drum and mixed them well. Note that the IQR of the population is 161616. She then took a random sample of 555 balls and calculated the IQR of the sample. She replaced the balls and repeated this process for a total of 505050 trials. Her results are summarized in the dotplot below, where each dot represents the sample IQR from a sample of 555 balls. 00551010151520202525Sample IQR Based on these results, does sample IQR appear to be a biased or unbiased estimator of population IQR
Answers
Answer: Sample IQR appears to be a biased estimator since it consistently underestimated the population IQR.
Step-by-step explanation: Checked by Khan Academy
Sample IQR appear to be a biased estimator of population IQR.
What is a biased estimator?
An estimate that deviates from the genuine population value is said to be biased. If the kind and extent of the bias are known, a biased sample may still be informative. When a sample's value matches the actual value of a population parameter, that is an unbiased estimator.
Matilda was curious if sample interquartile range (IQR) was an unbiased estimator of population IQR.
She placed ping pong balls numbered from 0 to 32 in a drum and mixed them well.
The IQR of the population is 16.
She then took a random sample of 5 balls and calculated the IQR of the sample.
She replaced the balls and repeated this process for a total of 50 trials. Her results are summarized in the dot plot below, where each dot represents the sample IQR from a sample of 5 balls.
Sample range appears to be a biased estimator since it consistently underestimated the population range.
The sample ranges appear to be centered below 32.
Therefore, the sample IQR is a biased estimator.
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Related Questions
Find a. Round to the nearest tenth
12 cm
22 cm
31.8°
75°
a
a = [?] cm
Law of Sines: sin A
sin C
sin B
b
=
a
С
Enter
Answers
Answer:
21.8cm is the required answer
Step-by-step explanation:
The measurement of the third side of the triangle is 22 cm
What is sine law?The law of sine or the sine law states that the ratio of the side length of a triangle to the sine of the opposite angle, which is the same for all three sides.
Given is a triangle with angles 75° and 31.8° also two of its sides are 12 and 22 we need to find the third side of the triangle,
Finding angle A
180°-(75°+31.8°) = 73.2°
Now, using the sine law,
Sin 73.2° / a = Sin 75° / 22
a = 21.80
a ≈ 22
Hence, the measurement of the third side of the triangle is 22 cm
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Which pair of binomials gives a product that is a perfect square trinomial?
A. (2x – 3)(2x – 2) C. (2x + 3)(2x + 3)
B. (2x + 2)(2x – 2) D. (2x + 3)(2x – 3)
Answers
Step-by-step explanation:
For the pair of binomials to give a product of a perfect square trinomial, the pair of binomials must be exactly the same.
The answer is (2x + 3)(2x + 3). (C)
simplify 4x-7y-5n+6 .
Answers
Answer:
The answer is -5n + 4x - 7y + 6
Step-by-step explanation:
Simplify the expression.
Hoped this helped!
Brainly, Please?
3,668 > 13,667
Yes No
8,136 > 8,036
Yes No
5,937 = 5,397
Yes No
67,499 > 67,500
Yes No
Answers
Answer:
Step-by-step explanation:
3,668 > 13,667 No cuz 3,668 is not greater than 13,667
8,136 > 8,036 Yes 8,136 is greater than 8,036
5,937 = 5,397 No cuz 5,937 doesn't equal to 5, 397
67,499 > 67,500 No cuz 67,499 doesn't equal to 67,500
can i be brainiest
help please, help me
Answers
Answer:
7.07 in^2 is what i got
ASAP PLS HELP WILL MARK BRAINLIEST!!
Answers
Answer:
The lines intersect at (-2,2).
Step-by-step explanation:
The line has an y intercept of 1 and a slope of -1/2 so after graphing the both of them thats where they intersect.
Please help ! I’ll mark you as brainliest if correct
Answers
Answer:
a
Step-by-step explanation:
The following are the last 10 run scores Colin got in cricket:
23, 20, 4, 19, 28, 35, 25, 0, 1, 30
a) Work out Colin's mean score.
b) Colin plays cricket again on Sunday. He gets 35 runs.
What is his new mean score?
Answers
Answer:
a)18.8
Step-by-step explanation:
Basically, you have to add all the numbers from the data set (188) then divide them by 10 and that equals 18.8
The second part you have to add 32 to 188 ( which equals 210) and that by 11 which equals 20
you walk 1/5 miles to a music store. Then you walk another 2/3 miles to shoe store. How many miles have you walked
Answers
Answer:
1 whole mile
Step-by-step explanation:
the LCD is 15. 5x3=15. what we do to the denominator we do to the top so 1x3=3 now we have 3/15.
now do that with the other fraction
3x5=15
2x5=12
12/15+3/15= 15/15= 1 whole
1. Find the measure of <2
Answers
Answer:
Step-by-step explanation:
If quadrilateral is rhombus, then m∠2 = 60°
4.65 rounded to the nearest whole
Answers
Answer:
5
Step-by-step explanation:
Answer:
its 5 because the 6 is above five so it rounds the 4 to a 5 if that makes sense prob not lol
Step-by-step explanation:
Debnil has 6 teaspoons of salt. The ratio of teaspoons to tablespoons is 3:1. How many tablespoons of salt does Debnil have?
Answers
Answer:
2 table spoons
Step-by-step explanation:
you have six teaspoons, and a ratio of 3:1, so if you use that, then times the three by two, and theres your six teaspoons, and then that means 2 table spoons!
Which graph is the solution to the following inequality
Answers
Step-by-step explanation:
-8x+5 > 21
Minus 5 from both sides
-8x > 16
Then divide 8 from both sides (also I am pretty sure the sign would change because you are dividing by a negative number)
x < -2
So the answer is x is less than or equal to -2
or C
I hope this helps!
Simplify an expression for the perimeter of the rectangle.
Plz quick
Answers
Step-by-step explanation:
i think it should be
2(8x+3)+10
Answer:
16x+16
Step-by-step explanation:
8x+3+8x+3+5+5
16x+6+10
16x+16
DON AND 3 FRIENDS SHARE 2 sandwiches at lunch which equation can be used to find out how much sandwich each person gets at the sandwich are shared equally
A. X= 4÷2
B. X= 2 ÷4
C. X= 1÷3
D. X= 1÷4
Answers
Reason:
The thing they need to share are the sandwiches (y), where x is the amount of sandwich per person, so that goes in the equation first.
4/2 is 2 so that doesn’t make sense.
C isn’t an option because there are 4 people in this word problem. Don and his 3 friends = 4.
D isn’t right because there’re 2 sandwiches, not 1.
5.
There are 5,000 tickets available for a concert. The percent of available tickets belonging to
each type of ticket is shown in the circle graph.
Ticket Types
Platinum
2%
Club
8%
Floor
16%
Upper
level
44%
Lower
level
30%
What total number of tickets is available at the club, platinum, and floor levels?
Answers
Answer:
The answer is 1,300 tickets.
Step-by-step explanation:
If you add 2%+8%+16%= 26% 26% of 5,000 is 1,300.
Answer:
1300
Step-by-step explanation:
platinum: 2%+club: 8%+ floor: 16%=26%
[tex]\frac{26}{100}[/tex]×[tex]\frac{5000}{1}[/tex] =1300
The value of a painting has a growth factor of 107. The current value of the painting is $345. How much was it orginally worth when you purchased it 10 years ago
Answers
Answer:
70$
Step-by-step explanation:
at school there are 8 students who only play violin, 10 students who only play guitar, 3 students who play both, and 12 students who don't play any instrument at all. if a student is randomly selected from this school, what is the probability that they play violin or guitar
Answers
Answer:
[tex]\frac{7}{11}[/tex]Step-by-step explanation:
[tex]\frac{21}{33}[/tex] simplified would be [tex]\frac{7}{11}[/tex]
The probability that they play violin or guitar is 7/11 .
What is Probability ?Probability is the likeliness of an event to occur.
It is given that
The number of students who only play violin is 8
The number of students who only play guitar is 10
The number of Students who play both is 3
The number of students who don't play either is 12
Total Students = 8+10+3+12 = 33
Total favorable outcomes (violin or guitar) = 8 + 10 +3
Probability = Total favorable outcomes / Total outcomes
Probability = 21 / 33
Probability = 7/11
Therefore the probability that they play violin or guitar is 7/11 .
To know more about Probability
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2/3 + 1 1/10 as a fraction
Answers
Answer:
Decimal Form:1.766666...
Mixed Number Form: 1 23/30
Exact Form:53/30
Step-by-step explanation:
at noon the temperature in successor Michigan was 82°F by midnight the temperature had fallen to 66°F what was the change in temperature over the 12 hour period
Answers
Answer:
The change in temperature was of -16ºF, that is, a decrease of 16ºF.
Step-by-step explanation:
At noon, the temperature was of 82°F.
By midnight the temperature had fallen to 66°F.
Change:
Final value subtracted by initial value, so
66ºF - 82ºF = -16ºF
The change in temperature was of -16ºF, that is, a decrease of 16ºF.
An equation of a line through (-1, 1) which is parallel to the line y = 5x + 1 has slope:
and y-intercept at:
Answers
Answer:
The slope is 5 and the y-intercept is at (0, 6)
Step-by-step explanation:
Parallel lines have the same slope, so the slope of the equation is 5. The equation is y = 5x + 6, so the y-intercept is 6.
find x and round to the nearest tenth
Answers
Answer and Step-by-step explanation:
22ft = x (c)
20ft = y (b)
18ft = z (a)
Plug into equation.
[tex]22^{2} = 20^{2} + 18^{2} - 2(20)(18)cosC (X)\\\\484 = 724 - 720cosC\\\\-240 = -720cosC\\\\\frac{1}{3} = cosC\\\\cosx^{1} (\frac{1}{3} ) = C\\\\C = 70.5288\\\\[/tex]
C ≈ 70.5 is the answer.
What is the distributive property of 35y + 49
Answers
Answer:
7(5y+7)
Step-by-step explanation:
7×5y=35y
7×7=49
so its 7(5y+7)
a bag contains 3 red balls 3 green ball and 1 blue ball.a ball is chosen at random and then placed back in the bag. a second ball is chosen at random. Find the probability that :a) the first ball is red?
Answers
Answer:
its a three out of seven then it stays the same
Step-by-step explanation:
Solve the inequality
10<3x+19
Answers
Answer:
The answer is ->
x>-3
How do we write equations from word problems?
Answers
What is the correct answer?
Answers
I believe the answer is 6, because you can add 6 + 6 to get 13, and I can see that 12 is in the decimal place, along with 30, 3 can be added twice to get 6, and since 30 has 3 in it, and can be added to 6 with 3's, that makes the answer 6.
Do 4x and 15+x have the same value when x is 5
Answers
Answer:
Yes!
Step-by-step explanation:
4x5= 20
15+5= 20
what is 3x4x19x39x4x9x11x10x20squared-10473408000 tee-hee
Answers
Answer:
A seizure and a half
Step-by-step explanation:
Answer:
495962981439552000
Which geometric sequence has a common ratio of -9?
{-1, -9, 81, 729, …}
{1, -9, 81, -729, …}
{-9; -81; -729; -6,561; …}
{81; 729; 6,561; 59,049; …}
WILL GIVE BRAINLIEST!!!!
Answers
Answer:
second one
Step-by-step explanation:
just multiply by -9 and see which one fits in
Answer:
{1, -9, 81, -729, …}
Step-by-step explanation:
Geometric sequence is basically multiplying the previous number by the constant. So it is 1 x -9 = -9, -9 x -9 = 81, -81 x -9 = -729, and so on.