Answer:
(19228.737 ; 20771.263)
Step-by-step explanation:
Given that:
Sample size, n = 17
Sample mean, m = 20,000
Sample standard deviation, s = 1500
α = 95%
The confidence interval,
Mean ± margin of error
Margin of Error : Tcritical * s/sqrt(n)
Tcritical at α = 0.05 ; df = n-1 = 17 - 1 = 16 ; 2 - tailed test = 2.120
Margin of Error = 2.120 * 1500/sqrt(17) = 771.263
Lower boundary :
20,000 - 771.263 = 19228.737
Upper boundary :
20,000 + 771.263 = 20771.263
Confidence interval :
(19228.737 ; 20771.263)
I WILL GIVE BRAINLIEST!!
Just need help for questions 88 and 90.
A study that looked at beverage consumption used sample sizes that were much smaller than previous national surveys. One part of this study compared 20 children who were 7 to 10 years old with 5 who were 11 to 13. The younger children consumed an average of 8.2 oz of sweetened drinks per day while the older ones averaged 14.1 oz. The standard deviations were 10.8 oz and 8.2 oz respectively.
Required:
Do you think that it is reasonable to assume that these data are Normally distributed? Explain why or why not?
Answer:
Step-by-step explanation:
In statistics, about 68 percent of values come in one standard deviation of the mean by using a standard normal model. Approximately 95% of the data were all within two standard deviations from the mean. Almost all of the data are in the range of three standard deviations of the mean (roughly 99.7%).
The 68-95-99.7 law, also known as the Empirical Rule, is based on this evidence. 68 percent of the data values of a naturally distributed data collection of small children with a mean of 8.2 and a standard deviation of 10.8 would be between -2.2 and 19.0.
Within a mean of 14.1 as well as a standard deviation of 8.2, 68 percent of the data values in a usually distributed data collection of older children would be between 5.9 and 22.3.
However, we cannot conclude that the data is naturally distributed since the real actual data vary from the usual normal curve computed above.
Hence, various measures like either goodness of fit or theory testing, would be used for this.
Need answer asap, will give brainliest.
Answer:
(-2,3)
Step-by-step explanation:
You can see that the purple is the new triangle. So look at the coordinate of the D. You can see that it is plotted at (-2, 3)
Answer:
(-2, 3)
to find the point of something you first find where uts standing on the x-axis (vertical line) and then where its standing on the y-axis (horizontal line)
63 students went on to the zoo. S vans were filled with equal numbers of students and 3 students rode in a car. How many students were in each van?
Answer:
no of students 63
the answer is...
21
can you help me find the value of each shape plz
Answer:
Star = 10Square = 4Circle = 1Step-by-step explanation:
Hope it helps you!
Dk Metcalf is my son
Answer:
Dad, is that you?
Step-by-step explanation:
Fing Using Addil
The number of boxes of cookies sold by Imelda was 36 more than the number of
boxes of cookies sold by Keiko. The number of boxes of cookies sold by Sarah
was 38 fewer than the number sold by Keiko. Write an algebraic expression for
each quantity. Use x to represent the unknown value.
Answer:
I can't understand your equation. Please rewrite it.
Step-by-step explanation:
The school store sells spiral notebooks in four colors and three different sizes. The table shows the sales
by size and color for 400 notebooks. What is the experimental probability that the next customer buys a
red notebook with 150 pages? Enter your answer as a simplified fraction.
100 Pages
150 Pages
200 Pages
Red
51
66
25
Green
38
48
19
Blue
22
55
25
Yellow
17
23
11
The experimental probability is
Answer:
66/400
Step-by-step explanation:
The formula for area is length x width.
What is the area of the rectangle if the
length is 7/5 and the width is 5/8? Write
your answer in simplest form.
5
8
75|
Answer:
7/8
Step-by-step explanation:
7/5•5/8= 7•5/5•8
= 35/40
=7/8
hope this helps chu
PLEASE HELP WILL MAKE BRAINLIEST
Answer:
Step-by-step explanation:
b
What is the measure, in degrees, of angle z?
I’m not going to show answer options because I don’t want someone to just put anything :)
I DO NEED HELP THOO !
Please help me! This is due tomorrow and I really need some help! Thank you.
Answer:
B. the mean is 59 inches
Step-by-step explanation:
if you add the number of inches together you get 413. 413 divided by 7 is 59. that is the mean.
Answer:
B: The mean wingspan is 59 inches.
Step-by-step explanation:
The mean is the average so when you add up all of the wingspans 53+59+59+60+60+61+61 you get 413, and to find the mean you would divide that by seven (413/7), because there are 7 students, which is 59.
Where would the last point need to be in order to finish graphing a square using the points ( 1, 3) 5,3 and 5,7?
A. (3, 7
B. 1, 5
C 1, 7
D. 5, 1
Answer:
C
Step-by-step explanation:
A Mustang GT on Missouri has a marked price of $60,000. If paid in cash you are to pay 15% less than the marked price. It also have a hire purchase plan which states to pay 30% of the marked price and $1000 monthly payments for 4 yrs.
A) Discount on Cash price.
B) Cash Price.
C) Amount Payable.
D ) Hire Purchase Price
E ) Difference between the Hire Purchase price and the Cash Price.
Answer:
A) Discount on Cash price. ($9,000 )
B) Cash Price. ($51,000 )
C) Amount Payable. ($51,000 )
D ) Hire Purchase Price ($66,000 )
E ) Difference between the Hire Purchase price and the Cash Price. ($15,000 )
Step-by-step explanation:
The following is the workings:
The GT Missouri marked price = $60,000
If paying cash,
Discount = 15%
(15/ 100 ) x $60,000 = $9,000
Actual Price (less discount) = $60,000 - $9000 = $51,000
If hire purchase,
Firstly, 30% marked price,
= (30/100) x $60,000 = $18,000
Monthly payment = $1000
Period = 4 years = 4 x 12 = 48 months
Total monthly payment,
$1000 x 48 = $48, 000
Therefore, total hire purchase payment
Monthly payment + initial 30% payment
= $18,000 + $48,000 = $66,000
Difference between hire purchase and cash price,
= $66,000 - $51,000 = $15,000
Sandy picked ½ of a bucket of plums, and Sally picked ½ of a bucket of plums. Sandy ate ⅓ of the pickings. How many buckets total did they pick?
Answer:
1 whole bucket
Step-by-step explanation:
hey can someone pls help me out? i don’t understand this. find the surface area of the rectangle prism. thx hun <3
Answer:1566
Step-by-step explanation:
helppppp meeeeee the sum of the squares of three consecutive integer numbers is 1454. Find the numbers. but i found 21 22 and 23. you need to find the other set plzzz
Step-by-step explanation:
A=x
B=x+1
C=x+2
[tex] {x}^{2} + {(x + 1)}^{2} + {(x + 2)}^{2} = 1454 \\ {x}^{2} + {x}^{2} + 2x + 1 + {x}^{2} + 4x + 4 = 1454 \\ 3{x}^{2} + 6x + 5 - 1454 = 0 \\ 3 {x}^{2} + 6x - 1449 = 0 \\ {x}^{2} + 2x - 483 = 0 [/tex]
I'm sorry but I can't use the calculator, I hope this helps you anyway.
Answer:
The two sets would be 21,22,23 and -21, -22, and -23
Step-by-step explanation:
This is because a negative number squared would be positive.
So -21^2+-22^2+-23^2 would equal the same as 21^2+22^2+23^2 which would be 1454.
FinD the 50th term of the sequence defined by the sequence 3n+3????
Answer:
[tex]\huge {\purple {a_{50} = 153}} [/tex]
Step-by-step explanation:
Given sequence is 3n + 3
[tex] \implies a_n = 3n + 3[/tex]
Plug n = 50
[tex] \implies a_{50} = 3(50) + 3[/tex]
[tex] \implies a_{50} = 150 + 3[/tex]
[tex]\huge {\red {\implies a_{50} = 153}} [/tex]
We have ,
=> T_n = a + ( n - 1)d
=> T₅₀ = 3n + 3
=> T₅₀ = 3(50) + 3
=> T₅₀ = 150 + 3
=> T₅₀ = 153
Here are the lowest temperatures recorded in the last 2 centuries for two US cities. How many more degrees colder is the record temperature for GA than FL?
Answer:
What are the temperatures
Explain how to tell 202/220 is not in simplest form
Answer:
An easy way to tell with a number like this is that both numbers are round, so they can both be divided by 2
Step-by-step explanation:
You can tell that it is not simplified if they are both even, as they can be divided by 2, or really, if both numbers have a common factor as a divisor.
For example, 3/6 has a common of factor by 3, 3/3 / 3/6 = 1/2.
A trip to the Rocky Mountains of Colorado from Denver will take 1 3/4 hours. Assuming we are 1/3 of the way there, how much longer in hours will the trip take?
9514 1404 393
Answer:
1 1/6 hours
Step-by-step explanation:
Assuming distance and time are proportional, 2/3 of the 1 3/4 hours remain:
(2/3)(7/4) = 14/12 = 1 1/6 . . . . hours remain
The trip will take 1 1/6 hours longer.
Answer:
the answer is 1 1/6 hours
Step-by-step explanation:
:)
A girl/boy says they like you what do you say?
Answer:
if you like them back say you like them back if not say you're flattered but your'e not looking for anything right now.
Step-by-step explanation:
Please solve this all for 24 points. <333 :)
Answer:
$33.75
65%
$13.78
Step-by-step explanation:
commission earned = percentage commission x worth of goods sold
4 1/2% x $750
4.5% x $750
0.045 x $750 = $33.75
Percentage mark-up = [(selling price - cost price) / cost price] x 100
[(90.75 - 55) / 55) x 100
= 65%
new income = 6% of $13 + 13
0.06 x 13 = $0.78
$13 + $0.78 = $13.78
A triangle has side lengths of 25in, 30in, and 50 in. Classify it as acute, obtuse, or right. Please help me.
9514 1404 393
Answer:
obtuse
Step-by-step explanation:
Using the idea of a "form factor", we find ...
f = a² + b² - c²
f = 25² +30² -50² = 625 +900 -2500 = -975
The form factor is negative, so the triangle is obtuse.
_____
Additional comment
The form factor, as defined above, classifies the triangle according to its sign:
f > 0 . . . acute
f = 0 . . . right
f < 0 . . . obtuse
The largest angle in the triangle can be found from ...
cos(C) = f/(2ab)
Here, it is C = arccos(-975/1500) ≈ 130.5416°
Let A and B be two logically equivalent compound propositions. Then
Answer:
[][][][][][][][][][][]
what is the domain of the function
Answer:
The domain is 0≤x<∞
Step-by-step explanation:
The domain is the values that the input can take.
The square root cannot be less than zero
sqrt(x) ≥ 0
That means x ≥0
The domain is 0≤x<∞
A school secretary plans to order 510 sandwiches for a school picnic. He asks 85 randomly selected students which type of sandwich is their favorite. Based on the data from the sample, how many of each type of sandwich should the secretary order? Show your work.
Sandwich type quantity
penutbutter 37
Ham 18
egg salad 5
Turkey 25
Answer:
85 will be the answer
Step-by-step explanation:
please mark as braillenest
Answer:
Step-by-step explanation:
510/85 = 6
Sandwich type quantity
penutbutter 37 X 6 = 222
Ham 18 X 6 = 108
egg salad 5 X 6 = 30
Turkey 25 X 6 = 150
222 + 180 + 30 + 150 = 510
THEN FIND THE VALUE OF X
Answer:
Supplementary
x = 31
Step-by-step explanation:
The given angles are supplementary which means their sum is equal to 180
3x + 25 + 2x = 180 add like terms
5x + 25 = 180 subtract 25 from both sides
5x = 155 divide both sides by 5
x = 31
14. A researcher wants to know if the average price of a home in Salt Lake City is higher than the average home in the entire United States. If you know that the average home price in Salt Lake City is $450,000 and the average home price in the entire country is $425,000, please conduct the appropriate test to see if Salt Lake City is more expensive under the following two conditions: (make sure to state which test you are using - they should be different, your null and alternative hypotheses, your a level, the critical score for that test, your statistical conclusion based on the observed statistic, and the meaning of your statistical conclusion in words) a. when you are given the actual standard error of the entire population of the country to be $30,000. (25 points) b. when you are given the estimated population standard deviation of homes in Los Angeles to be $30,000 for 360,000 homes (25 points)
Answer:
25000
Step-by-step explanation:
bc the proof is solid
Nicole is solving the equation and realizes there's a mistake.
A) Determine the mistake
B) Determine the correct answer.
- 2x -4>8
-2x - 4+4>8+4
-2x >12
- 2x/2 > 12 /2
x>-6
Answer:
She forgot to multiply both sides by -1 and reverse the inequality. She also didn't flip the signs.
Step-by-step explanation:
- 2x -4>8
-2x - 4+4>8+4
-2x >12
(-2x)(-1)<12(-1)
2x<-12
2x/2<-12/2
x<-6
Hope this helped!!!