Answer:
Quantitative forecasting relies on data that can be measured and manipulated. The data is usually from the past. This type of analysis is best for short-term forecasting as making assumptions about the future based on past performance is much more likely to be accurate in the near future.
Step-by-step explanation:
A random variable X has a lognormal distribution if Y = ln X has a normal distribution. For this problem, assume that Y has a mean and standard deviation of 0.353 and 0.754
(a) What are the possible values X can take?
(b) What is the probability that X is between 1 and 2?
Answer:
Step-by-step explanation:
From the given information:
For X to be valid, the possible values of X should be greater than zero i.e. X > 0
If X obeys a lognormal distribution
Then; Y = In X
So,
Now,
[tex]E(X) = e^{0.353} + \dfrac{1}{2}(0.754)^2[/tex]
[tex]E(X) = 1.8913[/tex]
Also;
[tex]V(X) = e^{2 \times 0.353 + 2(0.754)^2} -e^{2\times 0.353 + (0.754)^2}[/tex]
V(X) = 2.7387
∴
SD(X) = 1.6549
[tex]P(1 < X < 2) = P(X < 2) - P(X < 1)[/tex]
= 0.108
Scott earned 20 points more on his most recent math test than he earned on the previous test. If he earned at least 80 points on the most recent math test, how many points did he earn on the previous test?
Question 16 options:
s ≤ 60
s 60
s ≥ 60
9514 1404 393
Answer:
s ≥ 60
Step-by-step explanation:
If Scott earned 20 points more on this test, then he earned 20 points less on the last test. 20 points less than "at least 80" is "at least 60."
s ≥ 60
A carnival has a ring-toss game where players try to toss rings around a stick. A player gets two attempts in a game. Let X represent the number of rings a randomly chosen customer successfully tosses around the stick in a game. Based on previous data, here's the probability distribution of X along with summary statistics:
X=\text{\# of successes}X=# of successesX, equals, start text, \#, space, o, f, space, s, u, c, c, e, s, s, e, s, end text 000 111 222 P(X)P(X)P, left parenthesis, X, right parenthesis 0.900.900, point, 90 0.080.080, point, 08 0.020.020, point, 02 Mean: \mu_X=0.12μ X =0.12mu, start subscript, X, end subscript, equals, 0, point, 12 Standard deviation: \sigma_X\approx0.38σ X ≈0.38sigma, start subscript, X, end subscript, approximately equals, 0, point, 38
A player wins 10 tickets for each successful toss. Let T represent the number of tickets a randomly chosen players wins in a game. What are the mean and standard deviation of T?
Answer:
2
Step-by-step explanation:
i think
Answer:
1.2
3.8
Step-by-step explanation:
khan
Zane has 30 cupcakes and wants to give six each to a number of his friends.How many friends can he do this for ?
-44 x -44 × -44 × -44 =
Answer:
3748096
Step-by-step explanation:
The sum of a number and three is doubled the result and six less than the number find the number
Answer:
2(x+2)= 3x-6
2x+4= 3x-6
x=10
Step-by-step explanation:
One season, the Cougars won 20 games. They played a total of 25 games.
Use the equation 20 + g = 25 to find g, the number of games the team lost.
Answer:
The team lost 5 games
Step-by-step explanation:
Hope i helped
I will give brainiest to whoever answers correctly !!
A chocolate chip cookie recipe calls for 2 cups of chocolate chips for every 3 cups of flour. How much flour would you use if you only had 1 cup of chocolate chips?
Answer:
you would use 1.5 cups of flour
Consider the following functions.
f(x) = 3/x, g(x) = x/(x + 3)
Find
(f ∘ g)(x).
Find the domain of
(f ∘ g)(x).
(Enter your answer using interval notation.)
Find
(g ∘ f)(x).
Find the domain of
(g ∘ f)(x).
(Enter your answer using interval notation.)
Find
(f ∘ f)(x).
Find the domain of
(f ∘ f)(x).
(Enter your answer using interval notation.)
Find
(g ∘ g)(x).
Find the domain of
(g ∘ g)(x).
(Enter your answer using interval notation.)
Answer:
umm
Step-by-step explanation:
If u have read the book Ungifted by Gordon Korman then hopefully u can answer this question: Consider the two schools in the book; the Academy for Scholastic
Distinction and Hardcastle Middle School. In what ways are they
similar or different? Consider the physical space, school cultures,
lunchroom offerings, and students.
Answer:
similar
Step-by-step explanation:
Give four reasons why you think mathematics should be taught in primary schools
Answer:
i) Because so that we can understand them steps by step
ii)We could enjoy when we study in school
Answer:
because it helps the kid to make
1. base at mathematic
2.helps to change thinking way that math is hard
3. makes future bright like elon- musk
4. it helps to make stable in basic math calculation
The dolphins are feed 64 buckets of fish each day. The penguins are feed 1/8 as many buckets of fish as the dolphins. How many buckets of fish do the penguins eat?
Answer:
8
Step-by-step explanation:
You just gotta divide 64 by 8
HELP PLEASE
-9x + 3 > 39 OR - 5x + 6 < 16
9514 1404 393
Answer:
(-∞, -4) ∪ [-2, ∞)
Step-by-step explanation:
The solution to the first inequality is ...
-9x +3 > 39
-9x > 36 . . . . . subtract 3 from both sides
x < -4 . . . . . . . divide both sides by -9; reverse > to < because -9 is negative
__
The solution to the second inequality is ...
-5x +6 ≤ 16
-5x ≤ 10 . . . . . . . subtract 6 from both sides
x ≥ -2 . . . . . . divide both sides by -2; reverse ≤ to ≥ because -2 is negative
__
These solution sets are disjoint. The solution of the OR of these inequalities is the union of the solution sets. The graph is shown below. In interval notation, it is described by ...
(-∞, -4) ∪ [-2, ∞)
The -2 has a square bracket because it is included in the set. The curved bracket at -4 indicates it is not included.
The table shows the toothbrush production rate of One machine. Toothbrush Production Minutes 2 4 6 8 10 Toothbrushes 140 280 | 420 | 560 700 Which of these describes the production rate per minute? 30 toothbrushes 50 toothbrushes 70 toothbrushes d 140 toothbrushes
9514 1404 393
Answer:
c) 70 toothbrushes per minute
Step-by-step explanation:
The table tells you that production is 140 toothbrushes in 2 minutes. Dividing toothbrushes by minutes gives you the "per minute" value:
(140 toothbrushes)/(2 minutes) = (140/2) toothbrushes/minute
= 70 toothbrushes/minute
Simplify:-8у – (х- 4x) +3y
Answer:
=3x−5y
Step-by-step explanation:
Answer: =3x−5y
Step-by-step explanation:
Factor each expression.
4x² +25
Answer:
-5,5
Step-by-step explanation:
(2x+5)( 2x-5) x-5=0 x+5=0 I think that's what you do not sure
The question with the options are in the picture ^ plz and thank you
Answer:
A 90
Step-by-step explanation:
josie buys a scoop of dried cranberries and a scoop of dried bananas to make trail mix. The dried cranberries weight 8.5 ounces and cost $0.30 per ounce. The dried bananas weigh 10.5 ounces and cost $0.20 per ounce. How much does josie spend on the dried food
Answer:yes
Step-by-step explanation:
what is the sum of the sequence 4 + 9 + 14 + 19 + 504
Answer:
550
Step-by-step explanation:
using my brain
Answer:
550
Step-by-step explanation:
common sense.........
Help me please and thank you
HELP MWAH WITH YOURS TRULYS MATH
Answer:
its 1/2
Step-by-step explanation:
because 1/2 of 10/10 is 5/10
Answer:
1
Step-by-step explanation:
[tex]\frac{5}{10}[/tex]= 0.5
[tex]\frac{1}{2}[/tex]= 0.5
therefore making them equivilant
1/2(6y-8)-(12y-16)+7
Answer:
-9y + 19
Hope that helps.
what is t?
5t - 11 = 99
Answer:
22
Step-by-step explanation:
5t=99+11
5t=110
divide both side by 5 to find the value of t
Why is the accounting cycle important?
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!
Answer:
n>3
Step-by-step explanation:
the first one is 3 hopefully i am right
In an hyperbola, the fixed points that have a constant difference in distance from the center are called _
A. Asymptotes
B. Centers
C. Foci
D. Vertices
Please select the best answer from the choices provided
OA
OB
OC
OD
The correct answer is C. Foci.
A hyperbola is defined as the flat open curve resulting from the intersection of a right circular cone from a plane not parallel to any of its origins. The line joining the foci of the hyperbola is called the base line.
The perpendicular to the middle of the baseline is called the center line. It becomes apparent that all points of the center line are equidistant from the foci.
Learn more in https://brainly.com/question/15697124
4x+8≥5(3-x)
solve with steps pleaseee!
Answer:
[tex]x >\ or\ =\ \frac{7}{9}[/tex]
Step-by-step explanation:
[tex]We\ are\ given\ that,\\4x+8>\ or =\ 5(3-x)\\Hence,\\We\ can\ treat\ inequality\ in\ the\ same\ way\ we\ do\ for\ solving\ equalities.\\Hence,\\4x+8>\ or\ =\ 5(3-x)\\By\ simplifying\ the\ RHS,\\4x+8 >\ or\ =\ 15-5x\\Hence,\\Adding\ (+5x)\ to\ the\ LHS\ and\ RHS,\\4x+8+(5x) >\ or\ =\ 15-5x+(5x)\\Simplifying,\\5x+4x+8 >\ or\ =\ 15+(5x-5x)\\9x+8 >\ or\ =\ 15\\Adding\ (-8)\ to\ both\ LHS\ and\ RHS,\\9x+8+(-8) >\ or\ =\ 15+(-8)\\Simplifying,\\9x+(8-8) >\ or\ =\ 7\\[/tex]
[tex]9x >\ or\ =7\\x >\ or\ =\ \frac{7}{9}[/tex]
Step-by-step explanation:
4x+8≥5(3-x)
4x+8≥15-5x
adding 5x on each term
4x+5x+8≥15-5x+5x
9x+8≥15
subtract each term by 8
9x+8-8≥15-8
9x≥7
dividing each term by 9
9x/9=7/9
x≥7/9
is your answer
can i have help please
Answer:
A
Step-by-step explanation:
A rugby team had 45 players show up for tryouts last year. This year 60 players came to tryouts. What was the percent increase in the number of players that showed up this year compared to last year?
Question 5 options:
33%
133%
75%
175%
Answer:
60-45= 15
15/45= 0.33
0.33 X 100 = 33%