Answers
9514 1404 393
Answer:
b) 31%
Step-by-step explanation:
95% of the normal distribution is between Z values of ±1.96.
99% of the normal distribution is between Z values of ±2.576.
The change from a 95% interval to a 99% interval widens the range by ...
(2.576/1.96 -1) × 100% ≈ 31.4%
The width of the interval increases about 31%.
__
Compare the two attachments. The tail area of 0.05 means the central area is 0.95. Similarly, the tail area of 0.01 means the central area is 0.99.
_____
Additional comment
As always, when you're dealing with percentages, you need to understand what the base value is. Here, when we're talking about 95% and 99% confidence intervals, we're not talking about the numbers 0.95 and 0.99 and the increase from 0.95 to 0.99.
Rather we're talking about areas under the normal probability distribution curve, and the Z-values associated with those intervals. The change in interval width refers to the change in Z-values associated with the areas of 0.95 and 0.99.
Related Questions
MATH PLEASE HELP!!!!!!!!
Answers
Bryon purchased a box of candy at the store. On his way home he ate 1/4 of the candy from the box. At dinner with friends later that night he served 1/2 of what was left. If there are 6 chocolates left in the box, how many did the box contain to start with?
Answers
Answer:
6+6=12
12= 3/4th of the entire box
4=1/4th of the entire box
12+4=16
There was 16 chocolates originally.
Step-by-step explanation:
6 are left , 1/2 was eaten and a 1/4 was eaten. 6 left is equal to a 1/4. if a quater is 6 and their are 4 1/4 in a whole at 6 represent each quarter then 6*4=24
How to solve x/m = n/p. Solve for x. Please include steps for solving. Thank you
Answers
Answer:
[tex]x=\frac{n}{p}m[/tex]
Step-by-step explanation:
Since we have two variables on the left side (x and p), and they are being divided, we need to do the opposite in order to get it to the other side. Therefore, we multiply both sides of the equation by m.
Doing that, we get
[tex]\frac{x}{m} m=\frac{n}{p}m\\\\\\So,x= \frac{n}{p}m\\[/tex]
Use rounding to the nearest whole number to estimate the product
4 1/4 • 7 9/17
A) About 32
B) About 35
C) About 40
D) About 25
Answers
Answer:
A) About 32Step-by-step explanation:
4 1/4 • 7 9/17The first one is rounded down as 1/4 < 1/2 and the second one rounded up as 9/17 > 1/2.
4 * 8 = 32Correct choice is A
Product
17/4(128/17)128/432Option A
I think of a number Then multiply it by 3 then add 4 then divide by 4 my final answer is 3 less than the number is the number i thought of the beginning.
Write it as an equation and solve.
Answers
3x + 4 = 4x - 12
-x + 4 = -12
-x = -16
x = 16
Check:
(3x + 4) / 4 = x - 3
(3*16 + 4) / 4 = 16 - 3
(48 + 4) / 4 = 13
52 / 4 = 13
13 = 13
Calculate the work done to stretch an elastic string by 40cm if a force of 10N produces an extension of 4cm in it?
Answers
The work done to stretch an elastic string by 40cm is 20 Joules
Hooke law states that the force (F) applied to a spring is directly proportional to the extension (e).
F ∝ e
F = ke
k is the constant
Given that a force of 10N produces an extension of 4cm, hence:
F = ke
10 = k(4)
k = 2.5 N/cm
For an extension of 40cm, the work done is:
Work done = (1/2)ke²
Work done = (1/2)(2.5 N/cm)(40 cm)² = 2000Ncm = 20 Nm
Work done = 20 Joules
The work done to stretch an elastic string by 40cm is 20 Joules
Find out more at: brainly.com
can anyone help me with question b
Answers
Answer:
nnkbnlkn lk kgkbnlnbkvnbklcnlkbnblknbklv.
Step-by-step explanation:
Express the following rate as a unit rate: 28 1/3 minutes to run 3 1/3 miles
Answers
Answer:
28.20
Step-by-step explanation:
60 seconds in a minute
1/3 of a minute is 20 seconds
What is the mean of the frequency distribution?
33
Baseball bat length
f
27
2
28
4
29
3
31
5
16
30.3
30.7
29.4
29.6
Answers
Answer:
33
Step-by-step explanation:
12
Bobby is in an office manager at a weekly newspaper. He earns $22.50 per hour. How many hours per week does Bobby work if he earns $522 per week? Show Work please.
Answers
Divide total pay by hourly rate:
522 / 22.50 = 23.2 hours
Answer: 23.2 hours
elise says if u subtract 12 from my number and multiply the difference by -7 the result is -133 what is Elise's number
Answers
Answer:
40
Step-by-step explanation:
Madeline invest $3000. At the end of each year she receives 10% interest on the total balance for that what. What is of the third year? Please explain step by step or show work to be marked =]
Answers
3300 x 1.1 = 3630
3630 x 1.1 = 3993
She will have $3993.
Looking at the two, 7[tex]a^{4} b^{2} c^{2} and14abc^{6}[/tex]
what is the GCF of these
Answers
Answer:
[tex]7abc^{2}[/tex]
Step-by-step explanation:
Charlie rented a truck for one day. There was a base fee of $16.95, and there was an additional charge of 93 cents for each mile driven. Charlie had to pay
205.74 when he returned the truck. For how many miles did he drive the truck?
Answers
Answer:
Charlie drove 203 miles
Step-by-step explanation:
205.74-16.95=188.79
188.79/.93=203
Have a happy day <3 Miss Hawaii
Find the surface area and the volume of the prism .
Answers
Answer:
[tex]14 + 4 + 5.5 + 3 + 5.5 {?}^{2} [/tex]
Answer:
Step-by-step explanation:
We have 2 congruent large prisms and one small one.
Volume of a large one= 2*2*14 = 56 cm^3.
Volume of smaller one = 4*3*2 = 24 cm^3.
So volume of the whole prism
= 2*56 + 24
= 136 cm^3.
Surface area of a large one = 3*2*14 + 2*2*5.5 + 2*2*2 = 114
Surface Area of smaller one = 4*3*2 + 2*2*4 = 40
So surface area of the whole prism
= 2 * 114 + 40
= 268 cm^2.
y=2/3x constant of proportionality
Answers
Answer:
Looking at the equation, k=23 is our constant of proportionality because 23 is the constant number we multiply x by.
Highest common factor of 32,48,72
Answers
Answer:
8
Step-by-step explanation:
32 = 2 x 2 x 2 x 2 x 2
48 = 2 x 2 x 2 x 2 x 3
72 = 2 x 2 x 2 x 3 x 3
HCF ( 32, 48, 72 )
= 2 x 2 x 2
= 8
BAKERY Rolls are being prepared to go to grocery stores, Divide 72 rolls
into 2 groups so the ratio is 3 to 5,
Answers
Answer:
27:45
Step-by-step explanation:
The ratio is 3:5, so the total is 8. 72/8 is 9. 9*3 is 27, and 9*5 is 45, so the two groups consist of 27 and 45 BAKERY Rolls.
Pam is baking cupcakes. The recipe calls for 4 cups of sugar, She already put in 3 cups. How many more cups does she need to put in?
(write the equation use "n" as your variable"
Answers
https://brainly.com/invite/3caaa23db4167cc1029ce1999a411bee?utm_source=invite&utm_medium=link&utm_campaign=bfp_parental_feed&utm_term=parent
The probability that record drawn randomly from a standard deck of 52 cards is a four
Answers
Answer:
1/13
Step-by-step explanation:
no.of sample space n(S) = 52
no.of favourable cases n(E) = 4
probability of getting a four p(E) = n(E) / n(s)
or, 4/52
or 2/26
or 1/13
therefore,the probability of getting a four is 1/13.
Given the relation shown in the table below :
Answers
Answer:
domain: -7, -1, 0, 1
Range: -1, 0, 1, 2, 7
Step-by-step explanation:
I don't know the drop-down menu choices so I can't answer that one for you sorry :(
But I hope this helps :)
The perimeter of a regular pentagon is 4 1/7
cm. Find the length of its each side
Answers
Answer:
29/35 cm for each of the 5 sides
Step-by-step explanation:
The perimeter is the length of all the sides added together. A pentagon has 5 sides. So you'd need to divide 4 1/7 by 5.
It might be easier to divide 4 by 5 and then divide 1/7 by 5 then add the two numbers together.
4/5 = 0.80 or 8/10
1/7 divided by 5 is written as (1/7) / (5/1)
When you divide a fraction by a fraction, you flip the fraction in the denominator over and multiply the new fractions.
So (1/7) / (5/1) turns into 1/7 x 1/5 = 1 / 35
Adding 8/10 + 1/35, you first need to find the common denominator which would be 70.
8/10 would turn into 56/70
1/35 would turn into 2/70
Add them together now and you get 58 / 70. This can be reduced down to
29 / 35.
Before doing the question let's recall that their are two types of shapes mostly , irregular and regular . Regular shapes have all their sides equal while irregular doesn't have. And here The given shape is pentagon so it will have 5 sides . Also , it's perimeter is given i.e sum of it's all sides , If we assume it's one side to be s then perimeter will be (s+s+s+s+s) more conveniently 5s . Now , heading to our question ,
[tex]{:\implies \quad \sf 5s=4\dfrac{1}{7}}[/tex]
[tex]{:\implies \quad \sf 5s=\dfrac{4\times 7+1}{7}}[/tex]
[tex]{:\implies \quad \sf 5s=\dfrac{28+1}{7}}[/tex]
[tex]{:\implies \quad \sf 5s=\dfrac{29}{7}}[/tex]
[tex]{:\implies \quad \sf s=\dfrac{29}{7\times 5}}[/tex]
[tex]{:\implies \quad \bf \therefore \quad \underline{\underline{Each\:\: Side=\dfrac{29}{35}\:\: cm}}}[/tex]
Please help me 4⅗ ÷ ⅕ =
Answers
Answer:
23
Step-by-step explanation:
just used a calculator
Let’s start by making the mixed number an improper fraction. To do this you multiply the whole number by the denominator and add the numerator.
4 x 5 + 3 = 23
No we have 23/5 divided by 1/5
We have common denominators but you don’t need them for multiplying and dividing fractions. To discuss fractions you just go across, but there’s a thing. You have to flip the second fraction then you can multiply instead of divide.
So
23/5 x 5/1
23 x 5 = 115
5 x 1 = 5
115/5
This can be simplified to 23 because 5 divided by 115 is 23.
Hope this helps
representation of the function f(x)=-2x2+8x-6
Answers
Y-intercepts: (-6,0)
Please Help ASAP will give a brainliest the questions are in the photos
{HELP WITH MATH}
Answers
Answer:
its should almost be certainly be A
Step-by-step explanation:
Evaluate 6-(2/3)2 please
Answers
Answer:
4 2 /3
Step-by-step explanation:
Exact Form:
14 /3
Decimal Form:
4. 6
Mixed Number Form:
4 2 /3
All you do is Simplify the expression.
So, you do 6 - 2/3.
Then, you multiply that result by 2.
Therefore, your answers would be 4 2 /3.
-kiniwih426
5.) I somehow got $50 to buy hair dye, so I got 4 bottles of hair dye I had 5 dollars left, how
much was the hair dye?
Answers
Answer:
10
Step-by-step explanation:
is the answer
mark me as brainlestAnswer:
The hair dye was $11.25
Step-by-step explanation:
4x+5=50
4x=45
x=11.25
Ahmed went for a walk and covered 5-kilometre distance in 25
minutes. Help him to find his speed of walking.
Answers
5/0.25 = 20km/h
or
5000/1500 = 3.33m/s
Answer:
help with this https://brainly.com/question/25211060
Step-by-step explanation:
The perimeter of a poster is 16 feet. The area is 15 square feet. What are the dimensions of the poster?
Answers
PLEASE HELP ME ITS ALGEBRA THANK YOUUUU
Answers
Answer: 171 attendees
Step-by-step explanation:
I answered another similar question by you earlier, so I really hope you read through this explanation, as I will go far in depth. It's important you learn to do this so as not to simply skate through homework, then struggle with assessment.
For this problem, you have to find something called a unit price.
A unit price is the price in dollars per thing.
In this case, the price in dollars for the whole group is $132 for many things, 66 attendees.
Because 66 attendees costs $132, to find out how much money a single attendee costs, simply divide $132 by 66 to get 2$ for 1 attendee.
With this information, it is very straightforward to determine the number of attendees for $342. Simply divide $342 by $2 to get 171 attendees.
I really hope it helps :) and please, let me know if you want me to explain in more depth, the unit you are currently in is a fundamental part of early math, and it is important you understand it.