Answer:
The confidence interval will be shorter
Step-by-step explanation:
Required
How will the confidence interval be affected when n is used instead of n - 1
As sample size n increases, the confidence interval also increases by 1;
i.e.
[tex]df = n- 1[/tex]
However, the confidence interval gets reduced.
This implies that, the higher the degrees of freedom; the shorter the confidence interval.
Shorter. As the degrees of freedom increase, the value for tc decreases.
If x = 3, what is the value of x(14 - x)?
Answer:
33
Step-by-step explanation:
x(14 - x)
Step One: Substitute
3(14 - 3)
Step Two: Brackets/Parenthesis
3(11)
Step Three: Multiply
33
Answer:
33
Step-by-step explanation:
1. Subtract the numbers
(14-3)
2. Multiply the numbers
3*11= 33
Find the missing terms of the arithmetic sequence below.
..., 36, , ,21, ...
Answer:
Rule:-15
Step-by-step explanation:
36,21,6,-9,-24,-39,-54,-69...
Find the product of (x − 7)2
Answer:
the answer is 2x-14.
Step-by-step explanation:
because 2 multiply both the number 2 and x
I’ll give brainliest if you answer this correctly
Answer:
B y = (-7/4)x - 7
Step-by-step explanation:
Slope intercept form is
y = mx + b
Where m is the slope and b is the y-intercept
m = rise/run
m = ∆y/∆x
m = (y₂ - y₁) / (x₂ - x₁)
m = (-7 - 0) / (0 - -4)
m = -7/4
From the graph the y-intercept
b = -7
-------------------------
y = (-7/4)x - 7
78, 68, 75, 65, find the next term
Answer:
73,63
Step-by-step explanation:
it just goes down by 2 everytime
A laundry basket contains 15 socks, of which 5 are yellow.
What is the probability that a randomly selected sock will be yellow?
Write your answer as a fraction or whole number.
Answer:
5/15
Step-by-step explanation:
Out of 15, 5 are yellow. Converted to a fraction this will be 5/15. Hope this helps!! :)
Answer:
1/3
Step-by-step explanation:
Take the total number of socks and compare it to the number of yellow socks. 15 and 5. Now divide the total by the specified group (yellow socks), by doing so, you get 3.
Every 1 in 3 socks is yellow, meaning the chance of picking a yellow sock at random is 1/3.
Calculate the sum of the first 20 terms of an arithmetic sequence with the 3rd term 8 and the 8th term 143.
Answer:
4670
Step-by-step explanation:
that is the workings above
If the third term is 8 and eighth term is 143 then the sum of first 20 terms is 4210.
What is arithmetic progression?Arithmetic progression is a sequence in which all the terms have equal differences. Nth term will be a+(n-1)d in which a is first term, d is difference and n is number of term.
How to calculate sum?We have been given that third term is 8 and eight term is 143 and we have to calculate the sum of first 20 terms.
[tex]A_{3}[/tex]=a+(3-1)d
8=a+2d-----1
[tex]A_{8}[/tex]=a+(8-1)d
143=a+7d---2
Subtract equation 1 from equation 2.
a+7d-a-2d=143-8
5d=135
d=27
Put the value of d in equation 1.
a+2d=8
a+2*27=8
a+54=8
a=-46
We know that,
[tex]S_{n}[/tex]=n/2[2a+(n-1)d]
=20/2[2*(-46)+(20-1)*27]
=10(-92+19*27)
=10(-92+513)
=10*421
=4210
Hence if the third term is 8 and eighth term is 143 then the sum of first 20 terms is 4210.
Learn more about arithmetic progression at https://brainly.com/question/6561461
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Which are solution of
[tex] \frac{x}{5} = \frac{1}{x + 4} [/tex]
Answer:
x = 1, x = -5
[tex]x/5 = 1/x+4\\Apply Fraction and Multiply : \\\\x(x+4)=5 x 1\\Simplify :\\x(x+4) = 5\\Solve.[/tex]
I hope this is what you were looking for !
Mariko needs about 18 wheelbarrows full of stone for her Japanese garden. Her wheelbarrow has vertical sides with the given shape and is 2 1/2 feet wide. How many cubic yards of stone should she order?
Answer:
I don't know yet haheuehehheejejejej
find the equation of the striaght line passing through (3, 3) which is perpendicular to the line y=-1/2x-4
Answer:
it like the Same question I asked and I told u to draw a graph then solve
In the diagram below, BD is parallel to XY. What is the value of y? 85
measurement of y = 110° is the answer.
Find the value of x.
Answer:
[tex]y^{2}= 5.11=55\\y=\sqrt{55}\\x=\sqrt{y^{2}+5^{2} }\\x=\sqrt{55+25}=\sqrt{80}[/tex]
Step-by-step explanation:
find the value of x when r// s
Answer:
x = 81°
Step-by-step explanation:
Refer to the attachment for the steps.~
Please help me fast!
Answer: it’s 70 years
Step-by-step explanation:
Which type of savings fund is best suited to each situation?
Tammy drove 871 miles in 13 hours.
At the same rate, how long would it take her to drive 335 miles?
this is a test pls help
Answer:
Tammy takes 5 hours to drive 335 miles.
Step-by-step explanation:
Given that :-
Tammy drove 871 miles in 13 hours.To find :-
How long would it take her to drive 335 miles ?
Solution :-
Let us assume that it take her to drive 335 miles in x hours.
To find x, we need to find it in ratios.
871 miles = 13 hours
335 miles = x hours
Using cross multiplication method
871 × x = 335 × 13
multiply to get
871 x = 4, 355
divide each side by 871
871 x / 871 = 4,355 / 871
x = 5
hence, Tammy takes 5 hours to drive 335 miles.
Complete the transformations below.
Then enter the final coordinates of the figure.
A
(2,4)
B
A” ([?], [])
15,2) B" ([], [])
C" ([], 1)
C(3,1)
1) <-3, -2>
2) Dilate K = 4
Enter
will give brainliest
Answer:
[tex]A(2,4)<-3,-2)A'(-1,2)>A''(-4,8)[/tex]
[tex]B)(5,2)-> B'(2,0)->B''(8,0)[/tex]
[tex]C(3,1)->C'(0,-1)->C''(0,-4)[/tex]
[tex](x,y)->(x-3,y-2)->([(x-3)*4],[(y-2)*4])[/tex]
-------------------------hope it helps...have a great day!!C 5) Identify 2/10 as a decimal. * O 10.2 2.10 O .2 o O .02
Answer:
0.2
Step-by-step explanation:
What is the value of x in the figure below? If necessary, round your answer to
the nearest tenth of a unit.
X
12
D 4 B
A. 3.1
O
B. 12
C. 6.9
O D. 4
Answer:
O A. 3.1
Step-by-step explanation:
it's correct if I'm rwong (*´ω｀*)
Answer: The answer is C. 6.9
Step-by-step explanation:
(2.3x10^5) + (3.6x10^6)
Answer:
3.83 * 10^6
Step-by-step explanation:
When adding exponents, both the exponents and the bases should be the same. In this scenario, the bases are the same but not the exponents. What we should do is to decrease or increase one of the exponents and shift the decimal point over in one of the numbers to either left or right. I like to think of decrease, increase, and shifts as inward shifts and outward shifts when dealing with exponents in scenarios like this one. When I increase an exponet by an amount of times, the decimal point shifts left by the same amount of times. That's an outward shift. When the exponet decreases by an amount of times, the decimal point shifts right by the same amount of times. That's an in ward shift. There are two ways that we can simplify this scenario.
Way One:
(2.3 * 10^5) + (3.6 * 10^6)
(1) Raise the exponent 5 to 6 and move the decimal point in 2.3 to the left once. Now the bases and exponents are equal.
(0.23 * 10^6) + (3.6 * 10^6)
(2) Now add 0.23 and 3.6 then keep 10^6 for your exponential scenario.
3.83 * 10^6
(3) Check to make sure that there is only one number before the decimal. (in this case there is just one number before the decimal)
Final Answer: 3.83 * 10^6
Way Two:
(2.3 * 10^5) + (3.6 * 10^6)
(1) Decrease the exponent 6 to 5 and move the decimal point in 3.6 to the right once. Now the bases and exponents are equal.
(2.3 * 10^5) + (36 * 10^5)
(2) Now add 2.3 and 36 then keep 10^5 for your exponential scenario.
38.3 * 10^5
(3) Check to make sure that there is only one number before the decimal. (in this case there are two numbers before the decimal point; more steps!)
Not Yet Complete: 38.3 * 10^5
(4) Move the decimal point over until there is only one number before the decimal point and raise the exponent 5 to 6. (use the outward shift process!)
3.83 * 10^6
(5) Check for any flaws in your answers. (none left! we are done!)
Final Answer: 3.83 * 10^6
Overall, whatever way you choose to do this, you will get the same answer. I hope this helps and let me know if I am wrong! :D
Find the area of a circular pool whose radius is 2 meter.
Answer:
Step-by-step explanation:
area of a circular pool=πr^2
=3.14*(2)^2
=3.14*4
=12.56 m^2
Answer:
12.56 inches squared
Step-by-step explanation:
Radius= 2
Diameter= 4 (double the radius)
Pi= 3.14
Formula for finding area of circle= Pi x r squared
2 x 2= 4 (to find diameter)
4 x 3.14= 12.56
(to find area)
:)
The income statement of Carla Vista Co for the month of July shows net income of 2300 based on service revenue 6500, salaries and wages expense 2500, supplies expense 1100, and utilities expense 600. In reviewing the statement, you discover the following
Insurance expired during July of 600 was omitted
Supplies expense includes 150 of supplies that are still on hand at July 31
Depreciation on equipment of 250 was omitted
Accrued but unpaid salaries and wages at July 31 of 300 were not included
Services performed but unrecorded totaled 600
Answer:
-500
Step-by-step explanation:
2300-6500-2500--1100--600-150-250-+600
Convert the equation into Slope Intercept form (y=mx+b).
9y = -3x + 5
Answer:
y = -⅓ X + 5/9
slope = - ⅓
...
Answer:
slope intercept form is: (That is in the first pic)
y= - 1/3x + 5/9
slope = - 1/3
Step-by-step explanation:
See image below:) Hope this helps
Jessie has three one-gallon containers. The first one has 1/5 of a gallon of juice, the second has 1/5 gallon of juice and the third has 1/5 gallons of juice. How many total gallons of juice does Jesse have?
Need help finding constant rate of change!
Answer:
[tex]m = \frac{4}{7}\\[/tex]
Step-by-step explanation:
Given
The attached graph
Required
The constant rate of change (m)
This is calculated as:
[tex]m = \frac{y_2 -y_1}{x_2 - x_1}[/tex]
From the graph, we have:
[tex](x_1,y_1) = (3,4)[/tex]
[tex](x_2,y_2) = (10,8)[/tex]
So, the formula becomes:
[tex]m = \frac{8-4}{10 - 3}[/tex]
[tex]m = \frac{4}{7}\\[/tex]
Six values on the number line above are marked with letters. Match the opposites.
At the beginning of a basketball season the Panthers won40 games out of 17 games at this rate how many games will they win in a normal 120 game season
Answer:
51
Step-by-step explanation:
The problem states "the Panthers won 40 games out of 17 games"
It is impossible to win more games than the number of games.
Perhaps the problem should state "the Panthers won 17 games out of 40 games"
If this is correct, then we can answer the question with a proportion.
17 wins is to 40 games as x wins is to 120 games
17/40 = x/120
40 * x = 17 * 120
Divide both sides by 40.
x = 17 * 3
x = 51
Answer: 51
five balls, numbered 1, 2, 3, 4, 5, are placed in a bin. two balls are drawn at random without replacement. what is the probability that the sum of the numbers on the balls drawn is 7?
Answer:
15/7
Step-by-step explanation:
Add the numbers put them over 7
The probability that the sum of the numbers on the balls drawn is 7 from total 5 balls without replacement = [tex]\frac{1}{5}[/tex]
What is probability?Probability is a branch of math which deals with finding out the likelihood of the occurrence of an event. Probability measures the chance of an event occurred and is equal to the number of favorable events divided by the total number of events. The value of probability ranges between 0 and 1, where 0 denotes uncertainty and 1 denotes certainty.
According to the question
Five balls, numbered 1, 2, 3, 4, 5, are placed in a bin.
Two balls are drawn at random without replacement.
i.e
Total possibility for drawn balls without replacement = [tex]P_{r} ^{n}[/tex]
where n = 5
r = 2
[tex]P_{r} ^{n}[/tex] = [tex]\frac{n!}{(n-r)!}[/tex]
[tex]P_{2} ^{5}[/tex] = [tex]\frac{5!}{(5-2)!}[/tex]
[tex]P_{2} ^{5}[/tex] = [tex]\frac{5*4*3!}{(3)!}[/tex]
[tex]P_{2} ^{5}[/tex] = 20
Now, the probability that the sum of the numbers on the balls drawn is 7 is
(2,5) (5,2) (3,4) (4,3) = 4 possibilities in total
Therefore,
Probability = [tex]\frac{Number of favorable outcomes}{Total outcomes}[/tex]
= [tex]\frac{4}{20}[/tex]
= [tex]\frac{1}{5}[/tex]
Hence, the probability that the sum of the numbers on the balls drawn is 7 from total 5 balls without replacement = [tex]\frac{1}{5}[/tex]
To know more about probability here:
https://brainly.com/question/11234923
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What is the perimeter of an isosceles triangle with one side that
measures 5 ft. and two sides that measure 11 ft. each?
What is the volume of Maria's model in cubic centimeters?
a. 1,200 cu cm
b. 400 cu cm
c. 160 cu cm
d. 600 cu cm
Answer:
400 cu cm
Step-by-step explanation:
Volume = Length · width · height /3
Volume = 10 · 10 · 12 / 3
Volume = 1,200 / 3
Volume = 400 cu cm
