Answer:
i think it is B
Step-by-step explanation:
bias means you have an opinion on something and you make choices on it so a biased sample would not randomly chosen
The correct option is:
D.) It does not accurately represent the population.
What is sampling?In statistical analysis, sampling is the procedure by which researchers select a specific number of observations from a larger population. The sample strategy will depend on the sort of study being done, although it may involve systematic sampling or just plain random sampling.
It is a common statistics practice, when we want to study something from a population, we find a sample, which is a group of members of this population. The sample has to be representative of the population, that is, it has to involve all of its groups. If it does not involve all the groups, it is not an accurate representation of the population, and is called biased.
Hence, option C is correct.
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Can someone please help me with this question the instructions are to use a calculator to find the perimeter (the solid lines and curves) of each figure. The perimeter of each semicircle can be found by using the equation 1/2 pi d (the place where I put the words pi has the pi symbol, and d is just a variable. Also use 3.14 as pi, and the top part is cut off a little bit, but it still counts as a full semi circle. Please help me.
Answer:
The continuous closed line that makes the boundary of a two-dimensional shape is known as the perimeter. It’s easy to work out the perimeter of a shape with straight edges, such as a square, because you simply add the lengths of each edge together. A different formula is required to work out the perimeter of a semi circle (a circle cut in half), because it consists of a curved edge as well as a straight edge. That formula is
Step-by-step explanation:
P = \frac{1}{2} πd + dP=
2
1
πd+d
where d is the diameter of the semi circle.
Apply the number pi (π) to the formula
P = \frac{1}{2} πd + dP=
2
1
πd+d
Pi is a circle's circumference divided by its diameter and is always the same value, 3.14.
I think I got it right
3) Find the area of the polygon below. Give your answer as a number with no label. Assume your answer is square meters. (no links please!! i only have 27 points left!! and ip address hackers, i know who you are!!)
Find the volume.!!!!
Answer:
106.2
Step-by-step explanation:
length x width x height
Answer:
106.2ft³
Step-by-step explanation:
To find volume for a cube we need to multiply the height x length x width
or H x L x W so that means we do 6 x 3 x 5.9 = 106.2
Hope I helped :DDD
pls, help thanks! have a nice day
Answer:
24º
Step-by-step explanation:
If X and Y are suplementary, X + Y is equal to 180º.
What is the lower quartile (q1) of the box plot below?
Answer:
The lower quartile Q1 is the median of the lower half and the upper quartile is the median of the upper half. The lower quartile Q1 is the median of the lower half and the upper quartile is the median of the upper half.
Hope this helps:)
Step-by-step explanation:
Answer:
22
Step-by-step explanation:
ezy
I need help Ill give brainlyiest
I WILL GUVE BRAINLIEST!!!!
Answer:
[tex]92\ yd^2[/tex]
Step-by-step explanation:
The given figure is a trapezoid, the formula for finding the area of a trapezoid is the following,
[tex]A=\frac{h(b_1+b_2)}{2}[/tex]
Where (h) is the height of the figure, and ([tex]b_1[/tex]) and ([tex]b_2[/tex]) are the bases. It is given that the height is (8) and ([tex]b_1[/tex]) is (8). The value of ([tex]b_2[/tex]) can be found by adding the value of ([tex]b_1[/tex]) to the "overhang" that ([tex]b_2[/tex]) has over ([tex]b_1[/tex]). Thus, ([tex]b_2[/tex]) is ([tex]8+7[/tex]) or rather ([tex]15[/tex]). Now substitute the values into the equation and solve for the area of the trapezoid,
[tex]A=\frac{8(8+15)}{2}[/tex]
[tex]=\frac{8(23)}{2}[/tex]
[tex]=4(23)[/tex]
[tex]=92[/tex]
Part A: Based on the samples, which student generally has higher quiz scores?
A.
Kari, because the mean and median of her scores is 84.5.
B.
Jocelyn, because the interquartile range of her scores is 9.
C.
Jocelyn, because she had a maximum score of 95.
D.
Kari, because the range of her scores is 18.
Answer:
kari, because the range of her scores is 17
Construct an isosceles triangle with the given base and the opposite angle to the base.
Answer:
Proof of Construction: The compass was used as a measuring tool to obtain (and copy) the length of the given segment. Since the given segment and the copy are the same length, the segments are congruent.
Note: You may also think of the length from A to B as being the radius of a circle with center at A. By copying the circle at A', the radii segments will be congruent.
Step-by-step explanation:
hope this helps
Find the area of the semicircle. Round your answer to the nearest hundredth.
Answer:
56.52
Step-by-step explanation:
This is because in order to find an area of a circle you must do R^2*3.14 and since it is a semicircle add /2 so R^2*3.14/2 and since half of 12 is 6, 6*6 is 36 and 36*3.14 is 113.04 and divide that by 2 which is 56.52
Answer:
177.475 [tex]inches^{2}[/tex]
Step-by-step explanation:
Since the formula for finding the area of a full circle is A = π[tex]r^{2}[/tex], area equals pi times radius squared, we fill out the formula and solve.
A: unknown
Pi: 3.14
Radius: diameter is 12, so you divide it by 2, which is 6.
A = 3.14 x 6 squared.
using pemdas, you do exponents first,
A = 3.14 x 36
A ≈ 113.04
Now that we have the area for the full circle, we divide it by two to find the area of the semicircle,
113.04/2
= 56.52
So, the area of the semicircle is 56.52 [tex]inches^{2}[/tex]
This is my 3rd answer as a helper, I hope it helped!
Given the Following.... please help!
Answer:
The exponential equation is y = -2×(1/2)^x
Step-by-step explanation:
1) The horizontal asymptote of the function is the x axis (always nice)
2) At x=0, y=-2 (i.e, this function will be multiplied by -2 bc the exponent part will transform into one at x=0)
3) Then we need to ascertain the base of the exponential. Based on the facts that at x=1, y=-1 and the "a-value" is -2, we can set up an equation to find b:
can u give me the brainliest ?
What are the two ways we can represent a relation to determine whether the relation is a function? Explain how we we use each representation to determine a function.
Answer:
Table: the x-values and y-values are listed in separate columns; each row represents an ordered pair.
Mapping: shows the domain and range as separate clusters of values.Step-by-step explanation:
a plane was taking off from the local airport, as shown below by the illustration. what is a good estimate of the angle measurement that the belly of the plane is making with the runway on take off ?
A.60
B.45
C.30
D.15
Answer:
B
Step-by-step explanation:
It would be 45 degrees to the runway.
Hope this helps!
What is the area of the figure below?
The figure is shown. and plz give me a truthful answer i need this
Answer:
86 cm²
Step-by-step explanation:
Answer attached...
Hope it helps ^_^
evaluate the expression 81 minus 8 to the second power. 81 minus 8 to the second power
Answer:
17
Step-by-step explanation:
To evaluate the expression, subtract 8² from 81:
81 - 8²
8² = 8 × 8 = 64
81 - 64 = 17
17
On a quiz with 15 questions, Craig got 12 questions correct. If a question was chosen at random, what is the experimental probability that Craig got the question correct?
***10 Points***
Deals with Quadratic Functions
Answer:
A
Step-by-step explanation:
q(x) is the same as y, so in other words, it was asking you, what is x when y = 0. The solutions of this graph are -4 and a decimal number somewhere near 1.6, and since there is no 1.6 or a decimal number as a choice, its -4 which is the other answer of the graph.
1. Andre earns $5200 a month at his new job. In order to track his spending and saving, he created a monthly budget. Andre divided his income into five categories and created the following circle graph to represent the budget he created for himself. Use this circle graph to answer the following questions.
How much more money does Andre budget for Groceries and Utilities than he does for Savings?? Show your work. Write your answer as a dollar amount.
Answer:
answer is 312.00
Step-by-step explanation:
Trust me I just took the test
Please help will give brainliest
Answer: 24
Step-by-step explanation: dont give me brainliest if im incorrect
i need the volume base-9in height-7in width-12in
Answer:
its 756 cubic inches :D
Step-by-step explanation:
HELPLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
some one help plzzzz plz find y intercept and slope I will give brainliest if you give me all the answer for each table
Answer:
1. slope = 4 intercept = -2
2. slope = 2/3 intercept = -4
3. slope = -1 intercept = 13
Step-by-step explanation:
6/8 divide by 7/10? help
Answer:
15/14
Step-by-step explanation:
= 6/8 x 10/7
= 6/4 x 5/7
Multiply the numbers: 6 x 5 = 30
= 30/4x7
Multiply the numbers:
4 x 7 =28
Cancel the common factor (2):
= 15/14
Hope this helps,If you have any questions revolving around this topic,feel free to ask me and I will be glad to help,Good luck!
A single die is rolled. Find the probability of rolling 2 or an odd number.
Answer:
4/6 or 2/3
Step-by-step explanation:
1/2 of the die is odd numbers so, you would add one more number which would be 4/6 or 2/3
The probability of rolling 2 or an odd number is 2/3.
What is probability?"Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one".
For the given situation,
Rolling a die s = {1,2,3,4,5,6}
⇒[tex]n(s)=6[/tex]
The event a is rolling 2 = {2}
⇒[tex]n(a)=1[/tex]
Probability of rolling 2, [tex]p(a)=\frac{n(a)}{n(s)}[/tex]
⇒[tex]p(a)=\frac{1}{6}[/tex]
The event b is rolling an odd number = {1,3,5}
[tex]n(b)=3[/tex]
Probability of rolling an odd number, [tex]p(b)= \frac{n(b)}{n(s)}[/tex]
⇒[tex]p(b)=\frac{3}{6}[/tex]
Thus probability of rolling 2 or an odd number = [tex]p(a)+p(b)[/tex]
⇒ [tex]\frac{1}{6} + \frac{3}{6}[/tex]
⇒[tex]\frac{4}{6}[/tex]
⇒[tex]\frac{2}{3}[/tex]
Hence we can conclude that the probability of rolling 2 or an odd number is 2/3.
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2. Jolie manages an annual film festival in her town. Every year, one movie from every genre is chosen as a finalist to win best film. The following double bar graph represents the votes each film received by adults and children. Based on the data in this bar graph, which movie received 20% of the total votes? Show your work!
PLZ SHOW HOW TO DO IT SO I CAN GET THE QESTION RIGHT AND I"LL BRAINLEST YOU
Answer:
Step-by-step explanation:
All votes: 10*3+18+22+15*3+20+8=143
143*0.2(20%)=28.6 about 28vote (Scifi)
Scifi, 10 adults, 18 children, which is 20% of the votes.
An icicle is in the shape of an inverted cone with a diameter of 9 mm and a height of 27 mm. In cubic millimeters, how much frozen water is in the icicle? Use 3.14 for Pi. Round your answer to the nearest hundredth.
Answer:
572.27
Step-by-step explanation:
Just took the quiz-
Identify the percent of change as an increase or decrease. Then find the percent of change. Round to the nearest tenth of a percent, if necessary.
125 invitation to 75 invites
32 pages to 28 pages
7 players to 10 players
72 people to 36 people
Answer:
1) 40% decrease 2) 12.5% decrease 3) 42.9% increase i don't have the last one lol
Step-by-step explanation:
The Hogan family plans to build a rectangular house corral on their farm with length, L, and width,w. The area needs to be at least 1,900 ft 2 and have a width, w, of 20 ft.
What are the possible lengths, L, of the Hogans' house corral in feet?
Need help asap.
Answer: The length must be at least 95 ft. squared. Pick the line with the filled in left circle, and the right side is an arrow. Put the left side that's filled in on 95 (middle line between 90 and 100).
Step-by-step explanation: Divide the minimum total area by the minimum width. The answer is the minimum length.
Length x Width = Area
20 ft. x 95 ft. = 1900 ft. sq
I just two questions :)
Answer:
Hi There!!
Step-by-step explanation:
Your answers are:
1. C2. AI hope this helps!!
- abakugosimp
Need help ASAP................