Answer:
The number of judges that should be selected is 25
Step-by-step explanation:
Given that:
The C.I = 90%
Level of significance = 1 - C.I
= 1 - 0.90
= 0.10
Critical level for [tex]Z_{\alpha/2}[/tex] at 0.10 = 1.645
The margin of error E = 2.00
Let's assume that the sample standard deviation was $6.11
Then;
The number of judges that should be selected can be computed by using the formula:
[tex]E = Z_{\alpha/2} \times \dfrac{s}{\sqrt{n}}[/tex]
[tex]2 = 1.645 \times \dfrac{6.11}{\sqrt{n}}[/tex]
[tex]2\sqrt{n} = 10.05095[/tex]
[tex]\sqrt{n} = \dfrac{10.05095}{2}[/tex]
[tex]\sqrt{n} =5.026[/tex]
[tex]n=(5.026)^2[/tex]
n = 25.26
n ≅ 25
One out of three adults has worked in the restaurant industry at some point during his or her life. In an office of 90 workers, how many of these people would you expect to have worked in the restaurant industry at some point
Answer:
30
Step-by-step explanation:
1/3 of 90 is 30.
Help me with this question id u can pls
Answer:
1. principal × rate× time. 250×.03×1
2. $7.50
3. $30.00
I need help with this pls
Answer:
Im looking for this answer to lol
Step-by-step explanation:
Annie and Emily are sisters. Emily’s age is 7 more than twice Annie's age, a. The sum of their ages is 45. Which equation represents this relationship?
Answer:
3x=38
Step-by-step explanation:
Given that,
Annie and Emily are sisters. Emily’s age is 7 more than twice Annie's age, a. The sum of their ages is 45.
Let Annie's age is x.
Emily's age = 7+2x
ATQ,
The sum of their ages is 45.
x+7+2x = 45
Taking like terms together,
x+2x = 45-7
3x=38
Hence, this is the relation between their ages.
Jane receive a $80 gift card for a coffee store .She used it and buying some coffee that cost $7.82 per pound after buying a coffee she had $33.08 left on her car at many pounds of coffee did she buy
Answer:
she bought 6 pounds of coffee
Step-by-step explanation:
80 minus 33.08=46.92
46.92÷7.82=6
so the answer is 6
algebra help!!
Link them up together of wich one is wich.
wich one is an equasion?
wich one is an expression?
wich one is an identity?
wich one is a formula?
3x'2-2x+1
(a-b)'2=a'2-2ab+b'2
3x2-2x+1=4x-2
v=u+1
_ at'2
2
Answer:
formula
v=u+1
expression
3x'2-2x+1
PLSSSSSS HELP MEE ASAP
Answer:
What's the question?
Step-by-step explanation:
Your struggling with
1. Line k is perpendicular to the graph 4x - 3y + 14 = 0 and passes through (-3,2). Find an equation in Standard
Form whose graph is line k.
Answer:
Step-by-step explanation:
any line k perpendicular to 4x-3y=14 is
3x+4y=a
∵ it passes through (-3,2)
so 3(-3)+4(2)=a
-9+8=a
a=-1
so reqd. eq. is 3x+4y=-1
Carlos tried to find a fraction equivalent to 2/3. Below is his work. Which
statement describes Carlos' error?
2/3=2/3 x 1/4=2/12
He should have divided by 1/4.
He incorrectly multiplied 2/3 and 1/4.
It is impossible to find a fraction equivalent to 2/3.
He did not multiply 2/3 by a fraction equal to 1.
Answer:
He did not multiply 2/3 by a fraction equal to 1.
Step-by-step explanation:
For example he could have multiplied 2/3 by 4/4
= 2*4/3*4 = 8/12,
You've sold 101 rooms, 98 rooms, and 102 rooms over the past 3 days. You have 116 rooms available. What is your average occupancy for the past three nights?
Answer:
The average occupancy rate for the past three nights is of 86.49%.
Step-by-step explanation:
We want to find the average occupancy rate, as a percentage.
You've sold 101 rooms, 98 rooms, and 102 rooms over the past 3 days.
So the mean number of rooms sold during the past 3 days is given by:
[tex]A = \frac{101 + 98 + 102}{3} = \frac{301}{3} = 100.33[/tex]
Average rate:
[tex]R = \frac{100.33*100}{116} = 86.49[/tex]
The average occupancy rate for the past three nights is of 86.49%.
Find the slope of the line that passes through (4, 11) and (7,4).
Answer:
m=-7/3 I think thats the right answer
A charity bingo game costs $2 per round and has a $13 entry fee for an adult. It costs $3 per round and a $10 entry fee for a child. For how many rounds of bingo are the costs the same for an adult and a child?
2
3
4
5
Answer:
B=3
Step-by-step explanation:
Use a graphing calculator and type in these toe equations
y=2x+13
y=3x+10
and the point they intersect will say (3,19) and the answer is 3
For 3 rounds of bingo, the costs will be the same for an adult and a child option second is correct.
What is linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
We have:
A charity bingo game costs $2 per round and has a $13 entry fee for an adult. It costs $3 per round and a $10 entry fee for a child.
Let's suppose, for x rounds of bingo, the costs will be the same for an adult and a child.
For x rounds, cost for adult:
= 2x + 13
For x rounds, cost for child:
= 3x + 10
2x + 13 = 3x + 10
x = 3
Thus, for 3 rounds of bingo, the costs will be the same for an adult and a child option second is correct.
Learn more about the linear equation here:
brainly.com/question/11897796
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John and his family went out to eat at their favorite restaurant. The bill for the food was $65.00, and
they a left an 18% tip for the server. What was the total cost of their meal (including tip).
Answer:
$76.70 is the answer.
Step-by-step explanation:
18% of 65.00 is 11.70. I added 11.70 to $65.00, and got 76.70.
Answer:
76.7
Step-by-step explanation:
65 + 18% tip= 65 times 0.18 = 11.7 65 +11.7 = 76.7
Hope this helped have a good day
What is -7/12 + 3/8?
Answer:
oi
Step-by-step explanation:
PLEASE HELP!!!! WILL GIVE BRAINLIEST TO BEST ANSWER!
Refer to the graph to the right and follow the directions in parts (a) through (f)
(a) is a>1 or is 0
(b) Give the domain and range of f and the equation of the asymptote
(c) Sketch the graph of g(x)=-a^x
(d) Give the domain and range of g and the equation of the asymptote
(e) Sketch the graph of h(x)=a^-x
(f) Give the domain and range of h and the equation of the asymptote
Answer:brainless plz
Step-by-step explanation:
(a) Sketch the graph with equation y = f(x), showing the coordinates of the points where the ... Given that f(x) = e ... (b) Write down the range of f. ... Right-hand branch in quadrants 4 and 1.
If you get paid $23 per hour, how much money will you make in 12 hours?
Brian is going camping and. is making a tent from fabric. How much fabric will he need? 6 ft. 12.5 ft. 8.5 ft.
Answer and explanation:
Depending on the type and size of tent you wish to make, an average tent should consume more than 12.5ft of fabric. You would require more than 10 yards of fabric to make a small tent that an adult human being can fit in.
1 yard = 3 ft
And so you would require about 30 ft of fabric to make your tent. Therefore the options listed may not be enough fabric to make a tent
Graph the linear equation
Answer:
look at my graph
Step-by-step explanation:
solve for y for the second one by subtracting 2 by boths sides --> y > x -2
Can someone answer this
Answer:
Step-by-step explanation:
-11= p-9
P= 11-9
P=2
Express 82 kilometers per hour in miles per hour?
The ratio of boys to girls at a winter dance is 5 to 6. If there
are 90 girls, how many boys are at the dance?
Select one:
150
75
60
108
Answer:
75
Step-by-step explanation:
if there were 5 boys to 6 girls then multiply the 6 by 15 to get 90 then multiply the 5 by 15 as well and you get 75 to 90.
Answer:
108
Step-by-step explanation:
first divide 5 into 90 wich equals 18
then add to 90 which equals 108
I need help I don’t understand this
Answer:
Step-by-step explanation:
lets say "a" for the empty line,
for small triangle; y^2 = 2^2 + x^2
right triangle; we say a for empty line, a^2= 6^2 + x^2
and big triangle covering both triangles, 8^2 = y^2 + a^2
lets add left sides and right sides in each;
x^2 + 4 + x^2 + 36 + y^2 + a^2 = y^2 + a^2 + 64 and we can delete same things for both sides
y^2 and a^2 can be deleted and 4+36 - 64
2(x^2)=24
x^2= 12
and x will be √12
so, y^2 = x^2 + 2^2 which means y^2 = 12+4 y=16
Rachel borrows $2,000 from her bank. At a simple interest rate of 3%, how much does she have to pay back in 5 years?
Answer:
$2060
Step-by-step explanation:
3% of 2000 = 60
2000+ 60 =2060
Answer:2300
Step-by-step explanation:
A study is run comparing HDL cholesterol levels between men who exercise regularly and those who do not. The data are shown below.
Generate a 95% confidence interval for the difference in mean HDL levels between men who exercise regularly and those who do not.
Answer:
Hello your question is incomplete attached below is the missing part of the question
Regular Exercise N Mean Std Dev
Yes 35 48.5 12.5
No 120 56.9 11.9
answer : ( -12.968, -3.832 )
Step-by-step explanation:
To generate a 95% confidence interval
first step :
Assume population variance is equal we will calculate the number of degrees of freedom
df = n1 + n2 - 2 = 35 + 120 -2 = 153
second step:
Given : critical value = 0.05 , df = 153
hence Tc = 1.976
assuming the population variance is equal calculate pooled std as ( attached below )
Sp = 12.036
third step :
calculate the standard error
Se = [tex]Sp\sqrt{\frac{1}{n1} +\frac{1}{n2} }[/tex]
n1 = 35
n2 = 120
Sp = 12.036
hence Se = 2.312
final step
Compute the 95% confidence interval = ( -12.968, -3.832 )
attached below is the detailed solution
A Jar contains n nickels and d dimes. There are 22 coins in the jar, and the total value of the coins is $1.55.
How many nickels and how many dimes are in the jar? (Hint: Nickels are worth $0.05 and dimes are worth
$0.10.)
There are
nickels and
dimes in the jar.
1 card holds 10 stickers, 59 stickers. How many cards are needed
You go to the park on a windy day to fly a kite. You have released 40 feet of string. The string makes an angle of 36° with the ground. How high is the kite in the air?
Answer:
68ft
Step-by-step explanation:
Sin36=o/h = opposite / hypotenuse
x=40/Sin36
x=68
The kite in the air is 23.512 feet.
What is trigonometry ?Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles.
Given:
String length= 40 feet
Angle of elevation = 36
Now using concept of application of Trigonometry
sin 36= P/H
0.5878= P/40
P= 23.512 feet.
Hence, the kite in the air is 23.512 feet.
Learn more about Trigonometry here:
https://brainly.com/question/14746686
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10. What is the value of the expression
-8.5 x 4.72 ?
Answer:
-40.12
Step-by-step explanation:
Question 1: Write each of the following percentages as fractions.
If possible, simplify each answer
(a) 3%
(b) 14%
(c) 66%
(d) 10%
(e) 17%
(f) 30%
(g)50%
(h) 25%
(i) 15%
(j) 29%
(k) 16%
(l) 44%
(m) 99%
(n) 85%
(0) 52%
(p) 80%
(q) 60%
(r) 20%
(s) 5%
(t)72%
(u) 98%
(v) 2%
(w) 88%
(x) 15%
Question 2: Write each of the following percentages as fractions.
If possible, simplify each answer.
(a)111%
(b) 130%
(c) 150%
(d) 110%
(e) 125%
(f) 165%
Answer:
1. 3%=3/10
2. 14%=7/50
3. 66%=33/50
4. 10%=1/10
5. 17%=17/100
6. 30%=3/10
7. 50%=1/2
what is 8.1% of 252?
Answer:
20.412
Step by step explanation:
8.1% of 252 = 0.081 × 252 = 20.412
