Please help and NO LINKS I WILL REPORT YOU IF ITS A LINK
Emi computes the mean and variance for the population data set 87, 46, 90, 78, and 89. She finds the mean is 78. Her steps for finding the variance are shown below.
What is the first error she made in computing the variance?
A.) Emi failed to find the difference of 89 - 78 correctly.
B.) Emi divided by N - 1 instead of N.
C.) Emi evaluated (46 - 78)2 as -(32)2.
D.) Emi forgot to take the square root of -135.6.
Answers
Answer: Choice C) Emi evaluated (46-78)^2 as -(32)^2
Explanation:
The "46-78" is inside the parenthesis, so the result must also stay in the parenthesis. This means (46-78)^2 would become (-32)^2. The negative must be inside the parenthesis as well. Squaring the "-32" leads to a positive result, so every item being added is positive after the squaring operations are applied.
Related Questions
1) Mary and Frank have two bags in front of them. Mary's bag has 4 Inarbles; blue, yellow, red
and green. Frank's bag has 3 marbles; purple, orange, and pink. They will pick from their bag
at the same time. What is the probability of Mary selecting red from her bag and Frank selecting
purple from his bag?
Answers
hi
Mary has 1/4 to pick red and Frank 1/3 to pick purple
both event at the same time : 1/4*1/3 = 1/12
Pls help with number 2
Answers
brittany would be 10 years old because
if jazmine is 15 years older than alyssa than alyssa would be 20
and then alyssa is twice as old as brittany
so britany is 10 years old because 10x2=20
hey cutie pls help me thank u !!
f(x)= 2x-1
g(x)=3x
h(x)=x^2 + 1
Compute the following:
Find f(3)
Choose the best answer
A)9
B)5
C)10
Answers
Suppose that 60\%60%60, percent of adults in district A support a new ballot measure, while 45\%45%45, percent of adults in district B support the same measure. Pollsters take an SRS of 200200200 adults from district A and a separate SRS of 100100100 adults from district B to see the difference between the sample proportions (\hat{p}_\text{A}-\hat{p}_\text{B})( p ^ A − p ^ B )left parenthesis, p, with, hat, on top, start subscript, start text, A, end text, end subscript, minus, p, with, hat, on top, start subscript, start text, B, end text, end subscript, right parenthesis. What will be the shape of the sampling distribution of \hat{p}_\text{A}-\hat{p}_\text{B} p ^ A − p ^ B p, with, hat, on top, start subscript, start text, A, end text, end subscript, minus, p, with, hat, on top, start subscript, start text, B, end text, end subscript, and why?
Answers
Answer:it’s B (120 succes and 80 failures for khan academy)
Step-by-step explanation: trust me
The shape of the sampling distribution of [tex]\hat{p}_\text{A}-\hat{p}_\text{B}[/tex] is approximately normal because the number of success in district A is 120
How to determine the shape of the distribution?The given parameters are:
Proportion of adults in district A = 60%Proportion of adults in district B = 45%Sample size of A, n = 200Sample size of B, n = 100In the sample size of 200, the number of adults that support a new ballot measure is:
Success = 60% * 200
Success = 120
Those that oppose is
Failure = 200 - 120
Failure = 80
If 45% supports a new ballot measure in district B, then 55% do not support
The difference between those that support and do not support is:
(55% - 45%) * 100 = 10
Hence, the sampling distribution of [tex]\hat{p}_\text{A}-\hat{p}_\text{B}[/tex] is approximately normal
Read more about normal distribution at:
https://brainly.com/question/4079902
what is the area of the circle
Answers
Answer:
12.56
Step-by-step explanation:
3.14 times r^2
A circle is centered at A(-5,-8)A(−5,−8)A, left parenthesis, minus, 5, comma, minus, 8, right parenthesis. The point M(-1,-3)M(−1,−3)M, left parenthesis, minus, 1, comma, minus, 3, right parenthesis is on the circle. Where does the point V(-11,-6)V(−11,−6)V, left parenthesis, minus, 11, comma, minus, 6, right parenthesis lie?
PPLLLSSSSS HELPPPP!!!!!! I will mark brainliest!!!!
Answers
Answer:
Its inside the circle
Step-by-step explanation:
Thats the answer on khan (RIP me i searched this up to get the answer and got it wrong to answer the right answer...)
Answer: Inside the circle
Step-by-step explanation: Khan Academy
Type the correct answer in each box. Use numerals instead of words.
In a survey conducted by a retail store, 58% of the sample respondents said they prefer to shop at places with loyalty cards.
If the margin of error is 3.4%, the expected population proportion that prefers to shop at places with loyalty cards is between
96
and
96
Answers
Answer:
1.) 54.6
2.) 61.4
(props to aeh589)
Explanation:
The expected population proportion that prefers to shop at places with loyalty cards is between 54.6% to 61.4% if, in a survey conducted by a retail store, 58% of the sampled respondents said they prefer to shop at places with loyalty cards. If the margin of error is 3.4%
What is the margin of error(MOE)?It is defined as an error that gives an idea about the percentage of errors that exist in the real statistical data.
The formula for finding the MOE:
[tex]\rm Z{score}= \frac{s}{\sqrt{n} }[/tex]
Where is the z score at the confidence interval
s is the standard deviation
n is the number of samples.
The percent of sample respondents = 58%
Margin of error = 3.4%
The expected population that prefers to shop at places with loyalty cards is:
= (58±3.4%)
Take minus sign:
= 54.6%
Take plus sign:
= 61.4%
Thus, the expected population proportion that prefers to shop at places with loyalty cards is between 54.6% to 61.4% if, in a survey conducted by a retail store, 58% of the sampled respondents said they prefer to shop at places with loyalty cards. If the margin of error is 3.4%
Learn more about the Margin of error here:
brainly.com/question/13990500
#SPJ2
Find the domain of the relation:
{(-3, -4), (-1, 2), (0, 0), (1, 3), (5, 4);
0 (-3,-1, 0, 1,5)
O {-4, 0, 2, 3, 43
{-4, 2, 3, 43
O {-4, -3, -1, 0, 1, 2, 3, 4, 5}
Answers
One year, an estimated 598,000 sandhill cranes migrated in March. The next March, an estimated 660,000 sandhill cranes migrated. To the
nearest percent, what is the percent change in the number of migrating cranes from the first March to the next?
Answers
Answer:
10.3679%
rounded - 10% increase
Step-by-step explanation:
That's the closest I got
someone help me with this plss
Answers
Answer:
C. b=1053
Step-by-step explanation:
Isolate b:
0.25b+168.75=432Subtract 168, 0.25b=263.25Divide by 0.25, b=1053Answer:
C) b = 1053
Step-by-step explanation:
.25b = 263.25
b = 263.25/0.25
b = 1,053
Select all graphs that are a function
Answers
Answer:
A C and D
Step-by-step explanation:
A P E X
jrjfjfjfjfjfjfjf jfjfjf jfjfjf jfjfjf
what is aproxamently the answer to 5 pi
Answers
Answer:
It turns into the decimal: 15.70796...
Step-by-step explanation:
Mary wants to make bouquets of roses. She has 32 lavender roses, 48 pink roses and 64 white roses. She wants each bouquet to have the same number of flowers of each color. What is the maximum number of bouquets she can make? Choose only ONE best answer. А 8 B 16 C 24 D 32 E 192
Answers
Answer:
32)
Step-by-step explanation:
The reason is the least amount of flowers is 32 and since she doesnt have anymore flowers of that type she cant make more bouquets
I hope you found this helpful!
At Kolbens Building, 3 out of every 7 employees use public transportation. There are 9,800 employees at the building. How many use public transportation?
I really need help on this
Answers
Answer:
I think the answer is 4800.
Step-by-step explanation:
Usually people would use 1/10 or anything like that, but here 3/7 was used. in order to find 10 percent you would divide by 10, correct, well I did the same with 7. (because you must find 1/7) The question was 3/7, so I multiplied 1400 by 3, and my answer was 4800. (sorry if this wasn't understandable, im the the best at explaining things)
please help pslpslsplspslspslspslsplspsl
Answers
Answer:
x=30/96
Step-by-step explanation:
x=31%
use the pythagorean theorem to find the unknown side of the right triangle? hii does anyone know the hypotenuse length?
Answers
Answer:
17
Step-by-step explanation:
8^2 + 15^2 = c^2
64 + 225 = c^2
√289 = c
c = 17
Answer:
yes the answer is 17
Step-by-step explanation:
all you have to do for next time is a^2+b^2=C^2
a and b are legs or the lines that are connected to the right angle. the c is the hypotenuse which is always longer than the legs
The question is in the image
Answers
Answer:
2.2 miles
Step-by-step explanation:
Coordinates of Joe's home = (2, 3)
Coordinates of the park = (1, 1)
The shortest distance = the distance between the two points
Use distance formula, [tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex] to calculate the shortest distance.
Where,
[tex] (2, 3) = (x_1, y_1) [/tex]
[tex] (1, 1) = (x_2, y_2) [/tex]
Plug in the values into the formula
[tex] d = \sqrt{(1 - 2)^2 + (1 - 3)^2} [/tex]
[tex] d = \sqrt{(-1)^2 + (-2)^2} [/tex]
[tex] d = \sqrt{1 + 4} [/tex]
[tex] d = \sqrt{5} [/tex]
[tex] d = 2.2 [/tex] (nearest tenth)
Shortest distance between Joe's home and the park = 2.2 miles
A cell triples in weight every hour. The cell initially weighs 0.02 grams.
Answers
Answer:
In 1 hour the cell will become 0.06 grams.
If you want more hours, keep on doing that.
please help I will; really appreciate it
Answers
Answer:
x+ 51+41=180°
X= 180-92
x= 88
Thus this is your answer.
Answer:
H < I < J
Step-by-step explanation:
H + I + J = 180
41 + 51 + J = 180
92 + J = 180
J = 88
two sides of a triangle are 4 and 6 the third side cant be what A 2 b 4 c 6 d 8 please respond asap
Answers
Answer:
it’s b.4
hopes this help you
50 points if correct and a brainly
A sequence can be generated by using an=an−1+3, where a1=4 and n is a whole number greater than 1. What are the first 5 terms in the sequence?
4, 12, 36, 108, 324
3, 12, 48, 192, 768
4, 7, 10, 13, 16
3, 7, 11, 15, 19
Answers
Answer:
4,7,10,13,16
Step-by-step explanation:
I sub
I just need to solve this: 5x^3=60x
Answers
Is this a function?
A) No
B) yes
Answers
Answer:a
Step-by-step explanation:
no
(dont mind this wreath habit tdd fi gcs rgb yd UK FCC hash if sgf j.g ch hff vou j.g fyi utf fi oh fry it ey HD st ugh)
18x-153=80
solve for x
Answers
Answer:
x=12.9444444
Step-by-step explanation:
Answer:
x=12.94
Step-by-step explanation:
What is the perimiter of a quadrilateral with verticles at (5,2), (10,2), (5,5), and (10,5)
Answers
Answer:
55
Step-by-step explanation:
someone help me with this please
Answers
Graph 2: parallel
Graph 3: neither
Graph 4: neither
I am so sorry if I'm wrong.
Brainliest would be nice.
Have a good day:)
(more like night LOL)
$4,500,000 is what percent of $5,000,000?
Answers
Answer:
90 percent of 5000000 lol
Answer:
90%
Step-by-step explanation:
Question is in picture
Answers
Answer:
Its A, B, and D
Step-by-step explanation:
I did this just yesterday lol
A: {(-3,-1), (2,2),(0,1),(1,3),(-2,4)}
B: {(-3,-1),(-2,2),(1,0),(3,1),(4,-2)}
C: {(-3,-1),(2,-2),(1,0),(3,1),(4,-2)}
D: {(-1,3),(-2,-2),(0,1),(3,1),(4,2)}
Answers
Answer:
Add al of the numbers
Step-by-step explanation:
all you have to do is add all the numbers
Mrs. Kvitova earns $78,000 annually. If her state income tax rate is
3.8%, how much does she owe per month for state income tax?