Answer:
Step-by-step explanation:Answer Explanation
Correct answers:
$\left(241.42,\ 262.14\right)$
A 95% confidence interval for μ is (x¯−zα/2σn‾√,x¯+zα/2σn‾√). Here, α=0.05, σ=37, and n=49. Use Excel to calculate the 95% confidence interval.
1. Open Excel, enter the given data in column A, and find the sample mean, x¯, using the AVERAGE function. Thus, the sample mean, rounded to two decimal places, is x¯=251.78.
2. Click on any empty cell, enter =CONFIDENCE.NORM(0.05,37,49), and press ENTER.
3. The margin of error, rounded to two decimal places, is zα/2σn‾√≈10.36. The confidence interval for the population mean has a lower limit of 251.78−10.36=241.42 and an upper limit of 251.78+10.36=262.14.
Thus, the 95% confidence interval for μ is (241.42, 262.14).
THE ANSWERS ARE WRONG. I need help finding the right answers for 30 pts. I will post an additional question after this for 30 points aswell.
Answer:
∠D = 60
∠E = 99; x = 4
x = 32
Step-by-step explanation:
First things first, the sum of angles in a quadrilateral is 360°.
∠D + 120 + 95 + 85 = 360
∠D = 360 - 120 - 95 - 85
∠D = 60
∠E + 86 + 100 + 75 = 360
∠E = 360 - 86 - 100 - 75
∠E = 99
24x + 3 = 99
24x = 99 - 3
= 96
x = 96 ÷ 24
x = 4
89 + 5x - 8 + 51 + 3x + 4 = 360
7x + 136 = 360
7x = 360 - 136
= 224
x = 224 ÷ 7
x = 32
Peter says, "If you subtract 17 from my number and multiply the difference by −3, the result is −45." What is Peter's number?
Answer:
32
Step-by-step explanation:
Let Peter's number = p
(Peter's number - 17) * - 3 = - 45
(p - 17) * - 3 = - 45
Open the bracket
-3p + 51 = - 45
-3p = - 45 - 51
-3p = - 96
Divide both sides by -3
-3p/ -3 = - 96/ - 3
p = 32
Hence, Peter's number is 32
how much is 14 kg 450 gram less than 20 kg
Answer:
14.45kg
Step-by-step explanation:
450g=0.45kg
14kg+0.45=14.45kg<20kg
the table shows the length of lessons per day, in some schools
Answer:
Step-by-step explanation:
I am sorry but please give detailed question
What numbers would be in the in the 4 sections of a 2 x 2 array that shows the problem 19 x 11?
100, 100, 90, 9
100, 10, 90, 9
100, 90, 10, 1
10, 10, 9, 9
Answer:
number 2
Step-by-step explanation:
After his hike, Brian calculated his average hiking speed to be 3.62 miles per hour.
A 2-column table with 4 rows titled Brian's Activity time (hours). Column 1 has entries hiking, mountain biking, horseback riding, cross-country skiing. Column 2 has entries 3, 1.45, 1.2, 0.75.
Answer:
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Step-by-step explanation:
Pls help I will give you brainiest
Calculate the sum of 33.1+1.95 *
Answer:
35.05 is the answer
Step-by-step explanation:
Answer:
35.05
Step-by-step explanation:
please give me a crow if this help you, have a good day
Leslie joins a fitness club that has an
initial fee of $20 plus a monthly fee of
$15. Rashad's club charges $40 initially
plus $10 per month. In how many months
will the clubs cost the same?
O 4 months
0 5 months
O 8 months
O 2 month
Answer:
4 months
Step-by-step explanation:
Leslie's equation: y = 15x + 20
Rashad's equation: y = 10x + 40
you can put them both in a table or substitute each answer option for x in both equations and see when they're equal
if you substitute 4 for x, both equation equal 80
Ehhh what is 2+2+9+9+0+2x0+2 dvided by 8 and 234898529 x 2340 i need a full explanation
Answer:
2+2=4
9+9+4=22
22+0=22
2×0=0
22+2=24÷8=3
Answer:
1. 0
2. 549662557860
Step-by-step explanation:
Well 2+2+9+9+0+2x0+2 is 0 because anything time 0 is 0 so then you do 0 divided by 8 which is 0. Then 234898529 x 2340 is 549662557860 is you add the commas then... 234,898,529 x 2,340 is 549,662,557,860
An item costs x dollars and then a 20% discount is applied. Select all the expressions that could represent the price of the item after the discount.
a. 20/100x
b. x-20/100x
c. (1-0.20)x
d. 100-20/100x
e. 0.80x
f. (100-20)x
Answer:
E, C, B
Step-by-step explanation:
Given m parellel to n find the value of x
Answer:
x = 13
Step-by-step explanation:
x + 167 = 180
- 167 - 167
x = 13
What percentage of 2 hours is 30 minutes
Answer:
40%
Step-by-step explanation:
It's 40% because there's 4 half hours in two hours. I don't know if that makes sense but i hope it helps!
please answer this, FAST!! please!!!
Answer:$15.40
Step-by-step explanation:
is the incenter always, never, or sometimes inside the triangle
Answer:
Always
Step-by-step explanation:
Answer: Always
the incenter is always inside the triangle
Step-by-step explanation:
In the picture lines AB and CD are parallel. Find the measures of the following angles. Explain your reasoning.
Answer/Step-by-step explanation:
1. <ABC and <BCD are alternate interior angles. Alternate interior angles are equal, therefore, since m<ABC = 38°, then m<BCD = 38°
2. m<ECF = m<BCD (corresponding angles)
m<ECF = 38° (substitution)
3. m<DCF + m<ECF = 180° (linear pair)
m<DCF + 38° = 180° (substitution)
m<DCF = 180° - 38° (Subtraction property of equality)
m<DCF = 142°
The height of a model rocket, H(t), is a function of the time since it was launched, t.What is the domain of H(t)?A.0 ≤ t ≤ 324B.0 ≤ t ≤ 36C.t ≤ 324D.t > 0
Answer:
[tex]0 \le t \le 36[/tex]
Step-by-step explanation:
Given
The graph of h(t)
Required
Determine the domain
t represents the horizontal data and according to the graph;
The value of t starts at 0 (the beginning of the curve)
and ends at 36 (the end of the curve)
These values are the domain of the graph, and it can be represented as: [tex]0 \le t \le 36[/tex]
The domain of H(t) is [tex]0\leq t\leq 36[/tex]
The correct answer is option B. 0 ≤ t ≤ 36
To do this question, the main thing is to look at picture.
We know from the graph that this is a quadratic function, So t has to be less than some positive number.
{ if t → -∞, H(t) → -∞, not in the line with the actual situation}
and look at the graph, the point where H(t) equals zero, one is 0 and one is 36.
Therefore: the domain of H(t) is [tex]0\leq t\leq 36[/tex].
For more information:-
https://brainly.com/question/7729758
Jolly has 5 candles and 2 knifes for the cake, what the ratio is to knifes to candles
Answer:
2 to 5 or 2:5
Step-by-step explanation:
HELP ITS DUE WHEN SCHOOL ENDS PLSSSS HELP
Answer:
y=2x+1
Step-by-step explanation:
the y intercept is at 1 and the slope u can just tell from the graph cuz rise over run so 2 over 1 which is 2
A 35-foot tall pole is leading towards a building. To stop the pole from leaning
further, a 48-foot long cable is secured from the top of the pole to a stake in the
ground opposite of the building. If the stake is 30 feet from the pole, what angle
does the cable make with the pole?
9514 1404 393
Answer:
38.5°
Step-by-step explanation:
You are given all three side lengths of the relevant triangle, so the Law of Cosines can be used to find any desired angle. If we call the desired angle C, then that law tells you ...
C = arccos((a² +b² -c²)/(2ab))
where a and b are the triangle side lengths adjacent to the angle of interest, and c is the side opposite. Here, 'a' and 'b' are the pole and cable lengths, and 'c' is the distance of the stake from the pole.
C = arccos((35² +48² -30²)/(2·35·48)) = arccos(2629/3360)
C ≈ 38.515°
The cable makes an angle of about 38.5° with the pole.
I will give 5 stars if you help me please
Answer:
52
Step-by-step explanation:
seperate the rectangles
two rectangles
1 = 40 2 = 12
40+12=52
Percents
Total
X
x
100%
X
Mia bought a poster that was discounted $5 from an
original price of $20. Which equation models how Mia
can find the percent of discount?
O $5 = x ?- $20
O $5($20) = x
O $5 = $20(x)
O $5(x) = $20
$5
$5
$5
$5
$20
Answer:
The answer is C
Step-by-step explanation:
I just did it
ur welcome
Jane took a test. The test had 130 questions. All the questions have equal value. She answered 104 questions correctly. What percent of the questions did Jane answer correctly?
Answer:
78% u have to do 130-26=104 then find a number that makes 26 = to 104
Answer:
104 - 130 / 130 x 100% = -20%
Let x be the price of a backpack. Which inequality represents prices
that are more than $15?
A:2 < 15
B:2 > 15
C:< -15
D:2 > -15
Answer:
B
Step-by-step explanation:
I just did that question on my yest
For the price of the backpack to be greater than $15, the following inequality should be satisfied → {x} > 15.
What is inequality?An inequality compares two or more numbers or expressions with one another. For example -
2x + 4y > 7
2x + 5y < 6
Given is that let {x} be the price of a backpack.
For the price of the backpack to be greater than $15, we can write -
{x} > 15.
Therefore, for the price of the backpack to be greater than $15, the following inequality should be satisfied → {x} > 15.
To solve more questions on inequality, visit the link below
https://brainly.com/question/29194803
#SPJ2
Write an equation of the line whose slope is 2 and whose y-intercept is -4
Answer:
y=2x-4
Step-by-step explanation:
let me know if im wrong
giving away the last of my points :(
please answer these two questions
Answer:
i think it a and c
Step-by-step explanation:
if i'm wrong sorry bout that i was just trynna help.since ur giving away ur last points u can go to my account and anwer my questions u dont have to give me the right answer or anything i promise i wont report u just do that and you can get mote points :)
Answer:
i think your answer is c
Step-by-step explanation:
heres song to remember
weeee will never ever, ever ( add subtract which ever fits best) denominators weee will never ever, ever ( add and subtract ) denominators.
the first one is adding ( wrong)
the second one the number is more than it should be ( wrong)
the third may be its most simplified form ( may be correct )
the fourth same as the second one just the 3 is only simplified. hope its right! :) have a great day! hope you get some points!
Write as a product: c^3-c^4+2c^5
PLEASE HELP!!!
Answer:
[tex]c^3-c^4+2c^5[/tex] [tex]= c^3 * (1 - c + 2c^2)[/tex]
Step-by-step explanation:
Given
[tex]c^3-c^4+2c^5[/tex]
Required
Write as product
[tex]c^3-c^4+2c^5[/tex]
Expand the above expression
[tex]c^3-c^3*c+2c^3*c^2[/tex]
Factorize:
[tex]c^3(1 -c+2c^2)[/tex]
The expression in bracket can not be further factorized.
Hence:
[tex]c^3-c^4+2c^5[/tex] [tex]= c^3 * (1 - c + 2c^2)[/tex]
The football team has a total of 50 jerseys. There are 5 medium-sized jerseys. What percent of the jerseys are medium-sized jerseys?
a package of 5 pairs of insulated socks costs 41.95. what is the unit price of the pairs of socks
Answer:
8.39
Step-by-step explanation:
divide the total price by the amount of the item there is:
41.95/5=8.39 per pair of socks
Answer:
$8.39 per pair
Step-by-step explanation:
41.95/5=8.39
Help me out please,Im having some trouble
Answer:
C or A
Step-by-step explanation:
trust please im good at math!
Answer:
C or A I hope that helps
Step-by-step explanation:
