Answer:
-8p-14
Step-by-step explanation:
A simple random sample of size n is drawn from a normally distributed population, and the mean of the sample is x overbar, while the standard deviation is s. what is the 99% confidence interval for the population mean? use the table below to help you answer the question. confidence level 90% 95% 99% z*-score 1.645 1.96 2.58 x overbar plus-or-minus startfraction 0.90 times s over startroot n endroot endfraction x overbar plus-or-minus startfraction 0.99 times s over startroot n endroot endfraction x overbar plus-or-minus startfraction 1.645 times s over startroot n endroot endfraction x overbar plus-or-minus startfraction 2.58 times s over startroot n endroot endfraction
The 99% confidence interval for the population mean will be x± [tex]\frac{2.58 s}{\sqrt{n} }[/tex].
What is a confidence interval?
A confidence interval is a set of calculations for an unrecognized parameter that is specified as a range with a lower and upper bound.
If we take an n-sample from a normal population and wish to estimate the population mean, the confidence interval for the mean is:
[tex]\bar x[/tex]±[tex]Z_\frac{\alpha }{2} \times \frac{s}{\sqrt{n} }[/tex]
The level of significance is found by;
[tex]\rm \alpha =1- \ condifidence\ level \\\\\ \rm \alpha =1- 0.99 \\\\\ \rm \alpha = 0.001[/tex]
The value of z is
[tex]\rm Z_{\frac{\alpha}{2}} = \rm Z_{\frac{0.01}{2}} = Z_{0.005}=2.58[/tex]
Hence the 99% confidence interval for the population mean will be x± [tex]\frac{2.58 s}{\sqrt{n} }[/tex].
To learn more about the confidence interval refer to the link;
https://brainly.com/question/2396419
Answer:
x Overbar plus-or-minus StartFraction 2.58 times s Over StartRoot n EndRoot EndFraction
Step-by-step explanation:
The answer above is correct.
A triangle has vertices at (3, 3), (6, 15), and (3, -3). What are the coordinates of the orthocenter?
A. (-69, 15)
B. (3.5, 3)
C. (4.2)
D. (9, 0)
Answer:
The answer would be A) (-69, 15)
Solution:
Finding 1st and 2nd
m = (y2 - y1)/(x2 - x1)
m = (15 - 3 )/(6 - 3)
m = 12/3
y = 4x + b
3 = 3(3)+b
3=9+b
-9 -9
-6=b
Finding 3rd
repeat the above process for 1 and 2, so now use 2 and 3 in the equation.
m = -9/3
m=-3
y=-3x+b
15=-3(6)+b
b=-3
Step 2
Solve for n.
11(n – 1) + 35 = 3nSolve for n.
11(n – 1) + 35 = 3n
Answer:
n is equal to -3
Step-by-step explanation:
11n - 11 + 35 = 3n
11n + 24 = 3n
11n - 3n = -24
8n = -24
n =-3
Answer:
n is equal to -3
Step-by-step explanation:
.
Bob made 25 free throws out of 40 free throws he attempted every 5 minutes. How many free throw did bob make in 12 minutes
Answer: 300
Step-by-step explanation: 25 times 12 = 300. 20 times 12 = 240. 5 times 12 = 60. 60 + 240 = 300
Answer:
300
Step-by-step explanation:
25 times 12 = 300. 20 times 12 = 240. 5 times 12 = 60. 60 + 240 = 300
50 POINTS!
Determine which function has the greater rate of change, if either.
A. Function B has a greater rate of change because it's rate of change is 4/3
B. Function A has a greater rate of change because it's rate of change is 4/3
C. Neither function has a greater rate of change because their slopes are both 4/3
EXPLAIN
the slope goes by several names
• average rate of change
• rate of change
• deltaY over deltaX
• Δy over Δx
• rise over run
• gradient
• constant of proportionality
however, is the same cat wearing different costumes.
so let's get two points from each table to get their slope or rate
for function A hmmm (2 , -5) and (6 , -2), and for function B hmmm (-5, -46) and (7 , -30)
[tex](\stackrel{x_1}{2}~,~\stackrel{y_1}{-5})\qquad (\stackrel{x_2}{6}~,~\stackrel{y_2}{-2}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-2}-\stackrel{y1}{(-5)}}}{\underset{run} {\underset{x_2}{6}-\underset{x_1}{2}}}\implies \cfrac{-2+5}{4}\implies \stackrel{\textit{\Large A}}{\cfrac{3}{4}} \\\\[-0.35em] ~\dotfill\\\\ (\stackrel{x_1}{-5}~,~\stackrel{y_1}{-46})\qquad (\stackrel{x_2}{7}~,~\stackrel{y_2}{-30})[/tex]
[tex]\stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-30}-\stackrel{y1}{(-46)}}}{\underset{run} {\underset{x_2}{7}-\underset{x_1}{(-5)}}}\implies \cfrac{-30+46}{7+5}\implies \cfrac{16}{12}\implies \stackrel{\textit{\Large B}}{\cfrac{4}{3}} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill \stackrel{\textit{\Large B}}{\cfrac{4}{3}}~~ > ~~\stackrel{\textit{\Large A}}{\cfrac{3}{4}}~\hfill[/tex]
7) A deck of cards has 4 yellow, 5 orange, and 5 blue cards. You pick 4 cards from the deck. Cards are
A not returned to the deck after they are picked.
P(four orange cards in a row)
Answer:
Please Brainliest
2/13
Step-by-step explanation:
So firstly, know that there are 13 cards in the deck (3 + 6 + 4).
Therefore, the probability of drawing a green is 4/13.
After you draw the green card, there will be 12 cards left. Therefore, the probability of drawing a purple card next is 6/12.
To find compound probability, multiply the probabilities of the two separate events happening together:
4/13 * 6/12
= 2/13
What is the equation in point-slope form of a line that passes through the points (−4, −1) and (5, 7) ?
y+1=8/9(x+4)
y+4=9/8(x+1)
y+1=8/7(x+4)
y−1=8/9(x−4)
Answer:
y+1=8/9(x+4)
I took the quiz and it was correct and i go to k-12
what is 0.6x + 4.8 = 7.2
Answer:
2.88x=7.2
x=7.2/2.88
x=2.5
=)
Answer:
x=4
Step-by-step explanation:
btw that's what M a t h w a y.
What is the value of x in the equation −x = 6 − 4x + 18? (1 point) 24 8 −8 −24
Answer:
-8
Step-by-step explanation:
-24=6-(4x24)+18= 6-96+18=-90+18=-72
-8=6-(4x8)+18= 6-32+18=-26+18=-8
PLEASE HELP! I WILL MAKE YOU BRAINLIST!
Answer: I think it is C
Step-by-step explanation: 32/4=8 so 1 cm = 8km
Manny invested $1,200 at a simple interest rate of 5% (0.05). How much money would he have after 7 years?
140 - (16 7/8) x 7 =
_______________
Thank you!
Answer:
−49 / 8
decimal form- -6.125
Step-by-step explanation:
140− 167 / 8 (7)
=
140− 1169 / 8
=
−49 / 8
what's better getting 14 out of 17 or 31 out of 39
Answer:
14 out of 17 is a 82% and 31 out of 39 is a 79%.
14 out of 17 is better
Answer:
it's better to get 14 out of 17
Step-by-step explanation:
14 out of 17 is 82% while 31 out of 39 is 79%
Linda drives 28 miles in 48 minutes, Keeping the same rate, how miles
would she drive in 24 minutes? I
Answer: 14 miles om 48 min.
Which expression can you use to find 16÷45?
Answer:
☆<《HOPE IT WILL HELP YOU 》>☆
Step-by-step explanation:
Exprassion is 16/45--x=0
Answer:
16 x 5/4
Step-by-step explanation:
u change division to multiplication then flip the fraction.
tada!
:)
If h(x) = −2x − 10, find h(−4).
Group of answer choices
−16
−2
−18
−3
Answer:
-2
Step-by-step explanation:
h(x) = −2x − 10, find h(−4).
h(−4) = -2 × (-4) - 10
= 8 - 10
= -2
Answer:
-2
Step-by-step explanation:
did the test
A pet store has 9 dogs, 6 cats, 8 gerbils, and 7 parrots. A pet is chosen at random. What is the probability of choosing a cat or dog?
A) 22/30 = 11/15
B) 14/30 = 7/15
C) 17/20
D) 1/2
Answer: D I believe since 15 is 50% of 30
Step-by-step explanation: Sorry if I'm wrong, If I'm right can you mark brainliest :)
Answer: 1/2
Step-by-step explanation: We all know that their 30 pets altogether and if you add cat and dogs together you get 15 and 15/30 is 1/2. So It is D)1/2
Which professional’s advice is Peter seeking?
Peter wants to buy office space for his new business. However, he is not sure if the current market is suitable for buying property. Hence, he consults his agent for advice.
Answer:Real estate agent
Step-by-step explanation:
got it right
Answer:
Real Estate Agent
Step-by-step explanation:
The two-way table below describes the car rental habits of sales representatives attending a conference. Sales Representatives’ Car Rentals, by Length of Stay Staying Fewer than Two Nights Staying at Least Two Nights Rented a Car 9 11 Did Not Rent a Car 21 14 What percentage of representatives staying at least two nights rented a car? 20% 44% 55% 79%.
The percentage of representatives staying at least two nights renting a car is 44%. Then the correct option is B.
What is the percentage?The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.
The two-way table below describes the car rental habits of sales representatives attending a conference.
The percentage of representatives staying at least two nights rented a car will be
[tex]\rm Percentage = \dfrac{11}{25}*100 \\\\Percentage =0.44*100\\\\Percentage = 44 \%[/tex]
The percentage of representatives staying at least two nights renting a car is 44%. Then the correct option is B.
More about the percentage link is given below.
https://brainly.com/question/8011401
Jada has 12 pencils and 24 erasers. She wants to create identical groups. What is the
greatest number of groups that Jada can make?
Answer:
12
Step-by-step explanation:
What is the value of p?
140°
90°
p
Answer:
230 or 50
Step-by-step explanation:
but i think it os 230
Answer:
50
Step-by-step explanation:
Graph the equation y = 4x + 6.
(6.7 x 10 5) – (2.3 x 102) =
-Answer:-10
Step-by-step explanation:
Answer:
6.7 x 105 = 703.5
2.3 x 102 = 234.6
703.5 - 234.6 = 468.9
Step-by-step explanation:
Given the sequence: 4.5, 5.75, 7, 8.25, Find the common difference
Answer:
1.25 is the common difference
Step-by-step explanation:
A ladder is resting against a wall. The foot of the ladder is `5`feet from the wall, and the top of the ladder is `16`feet from the ground. What is the slope of the ladder?
Step-by-step explanation:
that's wrong .....wait ...........
solve for x (x+2)(x-1)
Answer:
See below.
Step-by-step explanation:
Given :-
x + 2x - 1To Find :-
Values of xSolving :-
x + 2 = 0x = -2x - 1 = 0x = 1Solution :-
x = -2x = 1Which of the following differences could not give a distance between two points on a number
line? Explain why.
(1) 19-7
(3) -12 -(-7)
(2) -3-(-18)
(4) 14-(-6)
Answer:
Choice: (3) -12 -(-7)
Step-by-step explanation:
The distance between two points is by definition a positive number. If we wanted to know the distance between points 5 and 8, we should use the absolute value of the difference:
d=|5-8|=8-5=3
The same applies to negative points like -2 and -7:
d=|-2+7|=|2-7|=7-2=5
The only choice that does not result in a positive distance is (3) because
-12-(-7)=-12+7=-5
Thus this is not a distance between two points on a number line.
Choice: (3) -12 -(-7)
The slope of a line is 2/3 . What is the slope of a line that is perpendicular to this line?
- 3/2
Step-by-step explanation:
for perpendicular:
m1×m2= -1
Westwood Grocery Store needs a new freezer for popsicles and ice cream bars. The owner finds a freezer that is 4 feet long, 2 feet wide, and 3 feet tall. What is the volume of the freezer?
Answer:
24 centimeter square
Step-by-step explanation:
Volume = L x W x H
= 4 x 2 x 3
= 24 centimeter square
A tent has the shape of a pyramid on a rectangular base of length 6 meters and width 4 meters.How much space is inside the tent if its 5 meters high
Answer:
Space inside tent is 60m³
Step-by-step explanation:
Given length 6m, width 4m is rectangular base and height of tent 5m
Space = Volume of Pyramid = ⅓ × area of base × height
⅓ × 6 × 4 × 5 = 60m³
PLEASE MARK ME AS BRAINLIEST AND HAVE A NICE DAY :)