Answer:
The mean of the population is
4
.
The mean of the sample is
3.25
.
The difference between the mean of the sample and the mean of the population is
0.75
.
Step-by-step explanation:
Just did it
The difference between the mean of the sample and the mean of the population is equal to 0.75
What are mean?The mean is the average value which can be calculated by dividing the sum of observations by the number of observations
Mean = Sum of observations/the number of observations
We are given the
2 5 10 N 4 1 5 3
The mean of the population is;
0 + 1 + 4 + 3 / 4 = 4.
The mean of the sample is;
4 + 1 + 5 + 3 / 4 = 3.25
The difference between the mean of the sample and the mean of the population is;
4 - 0.35 = 0.75
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A car is traveling on a small highway and is either going 55 miles per hour or 35 miles per hour, depending on the speed limits, until it reaches its destination 200 miles away. Letting x represent the amount of time in hours that the car is going 55 miles per hour, and y being the time in hours that the car is going 35 miles per hour, an equation describing the relationship is:
55x + 35y = 200
If the car spends 2.5 hours going 35 miles per hour on the trip, how long does it spend going 55 miles per hour?
Round your answer to the nearest hundredths decimal place.
9514 1404 393
Answer:
2.05 hours
Step-by-step explanation:
Using the given equation with the given time, we have ...
55x +35(2.5) = 200
55x = 112.5 . . . . . . . . subtract 87.5
x = 2.05 . . . . . . . . . . divide by 55
The car spends 2.05 hours at 55 mph.
Joshua saves £12 a week in a saving account. How much will he save in one year?
Answer:
£624
52 weeks in a year 52 x 12
Alma wrote a phone app. She has noticed that 3\%3%3, percent of the users who download her app upgrade it the same day. Let NNN be the number of customers who download Alma's app until one upgrades it on the same day. Assume that the probability of each user's upgrades are independent. What type of variable is NNN?
Answer:
Geometric
Step-by-step explanation:
A geometric setting does not have a set number of trials, and the variable in question is the number of trials it takes to get the first success.
The upgrades are independent, and the probability of the customer upgrading is the same each time.
The type of variable NNN is Geometric
How to find how much percent 'a' is of 'b'?Suppose a number is 'a'
Suppose another number is 'b'
We want to know how much percent of 'b' is 'a'.
We are given that Alma wrote a phone app. She has noticed that 3%, percent of the users who download her app upgrade it the same day.
Let N be the number of customers who download Alma's app until one upgrades it on the same day.
A geometric does not have a set number of trials, and the variable in question is the number of trials it takes to get the first success.
The upgrades are independent, and the probability of the customer upgrading is the same every time.
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What’s the X coordinate of the vertex
Step-by-step explanation:
f(x) = (x + 3)(x - 5)
In a Quadratic curve, the x-coordinate of the vertex is equidistant to the x-intercepts. (If they exist)
In f(x), our x-intercept are x = -3 and x = 5.
=> (-3 + 5)/2 = 1.
Hence the x-value of the vertex is 1.
3. Anya budgets $194 for commuting to
work each month. She buys a monthly
bus pass for $68 and spends $6 each
time she buys lunch. Which inequality
describes the number of days, d, that
Anya can afford to buy lunch?
A 194 > 6d + 68
B 194 > 6d – 68
194 < 60 – 68
D 194 < 6d + 68
Answer:
c
Step-by-step explanation:
Mae has a number cube with 6 sides that are numbered 1 through 6. What is the probability that Mae will roll an odd number?
A
1 out of 3
B
1 out of 6
с
3 out of 6
D
5 out of 6
Answer:
C) [tex]P(E) = \frac{3}{6}[/tex]
The probability that Mae will roll an odd number
[tex]P(E) = \frac{3}{6}[/tex]
Step-by-step explanation:
Step(i):-
Given that Mae has a number cube with 6 sides that are numbered 1 through 6.
n(S) = { 1,2,3,4,5,6,} = 6
Let 'E ' be the event of odd numbers
Mae will roll an odd number
n(E) = {1, 3, 5} = 3
Step(ii):-
The probability that Mae will roll an odd number
[tex]P(E) = \frac{n(E)}{n(S)} = \frac{3}{6}[/tex]
[tex]P(E) = \frac{3}{6}[/tex]
Max earns $9.30 per hour does part time job how much money will max earn if he works 6 1/2 hours
Answer:
The answer is $60.45 :)
Step-by-step explanation:
1.) 9.30 x 6 = 55.8
2.) 9.30 (divided by) 2 = 4.65
3.) 55.8 + 4.65 = $60.45
4.) Max makes $60.45 every 6 1/2 hours.
Hope this helps!
ill give brainiest and 30 points
Answer:
50 feet
Step-by-step explanation:
According to the Pythagorean theorem a^2+b^2=c^2 and if you put it into this equation it is 30^2 + 40^2 =50^2 which does work out
I dont feel like typeing right now (its 50 )So here's my answer.
I need help ASAP please please
Answer:
[tex]\frac{x}{2}[/tex] - 14
Step-by-step explanation:
The graph shows the cereal consumption by Daniel's family. Which is the unit rate of
the proportional relationship shown in the graph?
Cereal Eaten
15
Bowls of Cereal
Days
Answer:
1/5
Step-by-step explanation:
PLLLS helpppp mee this is due now T-T
Answer:
Step-by-step explanation:
Answer:
= 2 and 5
Step-by-step explanation:
( 4 - 7x ) + ( 2x - 2 ) = 0
4 - 7x = 2x - 2 = 0
-7x -2x - 2 + 4 = 0
-5x - 2 = 0
-5 x = 0 or -2 = 0
x = 5 x = 2
The sum of two fractions can always be written as
а ______
Answer:
repeating decimal
your welcome
Urgent Math Help Needed!
A parabola has a line of symmetry x = -5. The minimum value of the quadratic function that it represents is -7. Find a possible equation of this parabola and explain how you found it.
Middle school students were asked how they got to school each morning. There were 120 students who said
they walked to school. This number represents 30% of the school enrollment. How many students are
enrolled?
Answer: 400
Step-by-step explanation:
n = 400
if we choose n as the number, we write are able to write an equation, or number problem.
30% of n = 120
now solve.
first we need to convert 30% to fraction form, which is 30/100.
the reciprocal of 30/100 is 100/30. now multiply 120 by 100/30
(120 x 100) / 30 = 400!
What is the y-intercept of the line y – 14 = 6(x – 2.5)?
Answer:
Slope = 12.000/2.000 = 6.000
x-intercept = 1/6 = 0.16667
y-intercept = -1/1 = -1.00000
Step-by-step explanation:
Find the value of x.
Answer:
56 degrees
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
X=56°
x+x= 112°
2x = 112°
x = 112/2
x = 56°
Hope this helps you...
have a great day!
(x+15)/(3z-y) if x=5 z=4 y=2
Find the area and perimeter show work stuck on this plz help
Answer:
Area = 36
Perimeter = 26
Step-by-step explanation:
Area = (4*2)+(7*4) = 8+28 = 36
Perimeter = 6+4+2+3+(6-2)+(3+4) = 10+5+4+7 = 15+11 = 26
Answer:
Perimeter: 26
Area: 36
Step-by-step explanation:
Perimeter:
6 + 4 + 2 + 3 + 4 + 7
10 + 5 + 11
15 + 11
26
Area:
(6 x 4) + (3 x 4)
24 + 12
36
which rectangular prism has a volume of 48 cubic feet?
Answer:
the long one hehe haha
Step-by-step explanation:
I did math
Write an equation in point-slope form of the line that passes through (-1, – 4) with slope -2.
y-
(X
Which expression is equivalent to (6 x P) + 3?
Answer:
The answer is 6×(p+3)
Step-by-step explanation:
whats 100+1? that is just a problem for u guys heheh lol
Answer:
110
Step-by-step explanation:
lol us get it 21 lolklll
Answer:100+1=101 ...huh...... thanks
I realized the answer is Lol
Step-by-step explanation:
The table lists students in an international summer school and the countries they come from.
Can the country each person comes from be represented as a function of that person's name?
Name
Country
Lucy
USA
Ify
Nigeria
Surya
India
José
Mexico
Tim
Germany
Ahmed
Egypt
COM
Caden
USA
José
Brazil
Answer: No
Step-by-step explanation:
Answer:
no no nono nononononono
Step-by-step explanation:
In 2009, Jennifer made $11.50 an hour, and in 2010, she made $12.75 an hour. What is the percent of change in Jennifer’s pay per hour from 2009 to 2010?
Show your work
(explain step by step)
Answer:
10.87%Step-by-step explanation:
Change in pay:
12.75 - 11.50 = 1.25Percent of change:
1.25/11.50*100% = 10.87% (rounded)Rosie is saving her pocket money.
Her mum says, “Whatever you save, I will give you five times the amount.”
If Rosie saves £2.23, how much will her mum give her?
If Rosie saves £7.76, how much will her mum give her?
How much will she have altogether?
are there any maths genius here can help?
Answer:
1 》let equal side be X and other side y
now, length of y= 2x sin teta/2
=12.3×sin42/2
=12.3 × sin21
=4.407
A triangle has angle measurements of 14°, 76°, and 90°. What kind of triangle is it?
acute
right
obtuse
Submit
Answer:
right
Step-by-step explanation:
A right triangle or right-angled triangle is a triangle in which one angle is a right angle.
Oscar charges $25 for the first hour of tutoring and $15 for each additional hour or fraction of an hour. The rates that Latoya charges for x hours of tutoring are modeled with the function shown.
Who will charge more for 5.5 hours, Oscar or Latoya? How much more?
Who?
How much more?
Answer:
Layota
$47.5
Step-by-step explanation:
Let number of hours = x
Given that:
Oscar's charges :
First hour = $25
Additional hours = $15
Thus :
Total charge : 25 + 15(x - 1)
The piece wise equation given for Layota's charge rate :
First 3 hours = $30
Next 3 hours = $20
Hours greater Than 6 = $10
If total hours ; x = 5.5 hours
Oscar :
$25 + $15(5.5 - 1)
$25 + $15(4.5)
$25 + $67.5
= $92.5
Layota:
First 3 hours :
$30 * 3 = $90
Hours left :
$20 * (5.5 - 3)
$20 * 2.5 = 50
Total = $90 + $50 = $140
Layota charges more : 140 > 92.5
Difference :
$140 - $92.5
= $47.5
the figure below is made of two triangular prisms. what is the volume of the figure
Answer:
896 cubic inches
Step-by-step explanation:
V (Δ prism) = 1/2 · height · base · length
V (top prism) = 1/2(6)(12)(14)
V (top prism) = 504 in³
V (bottom prism) = 1/2(7)(8)(14)
V (bottom prism) = 392 in³
504 + 392 = 896
This car dealership pays the salesperson a bonus for selling the car equal to 6.5% of the sale price. How much commission did the salesperson lose when they decided to offer a 10% discount on the price of the car? Show your work.
Answer: 1%
Step-by-step explanation:
Let x be the sale price.
Commission = 6.5% of x = 0.065x (Before discount)
Discount amount = 10% of x = 0.1x
Final sales price = x- 0.1x = 0.9x
Commission after discount = 6.5% of (0.9x)
= 0.065 (0.9x)
= 0.0585x
Loss = ( Commission before discount ) - (Commission after discount )
= 0.065x - 0.0585x
= 0.0065x
Loss percent = [tex]\dfrac{0.0065}{0.65}\times100=1\%[/tex]
Hence, the salesperson lose 1% when they decided to offer a 10% discount on the price of the car.
The sales person lost a commission of 10%.
Let's assume that the price of the car is 1000. The commission the salesperson earns is $65(0.065 x 1000). The price of the car after the 10% discount is $900 (0.9 x 1000). The commission the salesperson earns on the discounted car is $58.5(0.065 x $900). The commission lost = (58.5 / 65) - 1 = 10%To learn more about how to calculate discounts, please check: https://brainly.com/question/9350849