Answer:
a) mean = 11.1
b) Standard Deviation = 5.191
Step-by-step explanation:
Given the data in the question;
x = 5.2, 13.8, 8.6, and 16.8
sample n = 4
so;
x ( x - mean)²
5.2 34.81
13.8 7.29
8.6 6.25
16.8 32.49
∑ 44.4 80.84
a) Mean
Mean = total sum of the sample divided by the sample size
mean = ∑x / n
we substitute
mean = 44.4 / 4
mean = 11.1
b)
Standard Deviation is the Square root of variance;
Variance = ∑(x-mean)² / n - 1
we substitute from the above table
Variance = 80.81 / 4 - 1
Variance = 80.81 / 3
Variance = 26.94667
now since Standard Deviation is the Square root of variance;
Standard Deviation = √Variance
Standard Deviation = √26.94667
Standard Deviation = 5.191
If /Il m, what is the value of x?
Answer:
x= 137 hope it helps have a nice day
Answer:
137
Step-by-step explanation:
180-43 (these two angles plug into all the angles)
Hazel bought some donuts for $2.15 each. She also bought a drink for $3.12. She spent a total of $11.72. Write an equation to find how many donuts Hazel bought
Answer:
she had 4 donuts!
Step-by-step explanation:
her total was $11.72 minus the drink so $8.60 and divided by the cost of donuts $2.15 you get 4.
Answer:
(11.72 - 3.12) ÷ 2.15 = 4
Step-by-step explanation:
You can double check by doing (2.15 x 4) + 3.12 = 11.72
Ursula bougth dozen rollz of the first aid tape for the health office the rollz were divided equally into 4 boxes how many rolls are in each box
Find the indicated real \large nth root(s) of \large a.
\large n=6, \large a=64
Answer:
e
Step-by-step explanation:
The graph of a function f is shown below.
Find one value of x for which f(x) = -4 and find f (2).
helppp pleaseeee
https://homework.russianschool.com/resource?key=54457jiywiyhw
Answer:
120
Step-by-step explanation:
An office supply store recently sold a black printer ink cartridge for $14.99 and a color printer ink cartridge for $23.99. At the start of a recent fall semester, a total of 64 of these cartridges was sold for a total of $1157.36. How many of each type were purchased?
PLEASE HELP M IN THE MIDDLE OF A TEST
A rock is thrown upward with a velocity of 12 meters per second from the top of a 25 meter high cliff, and it misses the cliff on the way back down. When will the rock be 3 meters from ground level? Round your answer to two decimal places.
Answer:
find t when
25 + 12t - 5t^2 = 3
using g=10 (easier than using 9.81)
I need help ASAP!!!!
Answer:
r=5
Step-by-step explanation:
25^3 = 15626
-5^3 = -125
5^3 = 125
15^3 = 3375
Answer:
R=5
Step-by-step explanation:
You first have to find the cube root
The cube root of 125 is 5
r=5
Heres the picture, thank you!
Answer:
x = 6√(2)x = 6√(2)y = 6√(2)Step-by-step explanation:
Sides equal opposite to equal angles are always equal -----------<1>If one angle of triangle is 90°, then it is a right triangle, can find sides with the help of Pythagoras Theorem. -----------<2>The sum of all three sides of any triangle is 180°. -----------<3>→ Given angles of triangle = 45° + 45° + 90° {from <3>}
→ x = y {because of <1>}
→ H² = P² + B² (Pythagoras Theorem) {from <2>}
→ (12)² = x² + y²
→ 144 = x² + x² [x = y]
→ 144 = 2x²
→ 144/2 = x²
→ 72 = x²
→ √(72) = x
→ 6√2 = x
→ x = y
so,
x = 6√2 = y
x = 6√(2)y = 6√(2)HOPE THIS HELPS YOU
Follw me = 10 thanks
Mark as brainliest = 10 thanks
1 thanks to me = 2 thanks
Missy read 1/12 of a book by Monday 1/4 of the book by Tuesday and 5/12 of the book by Wed. if the pattern continues how much of the book will she have read by Fri. draw a chart or explain
Answer:
part A:
1/12 on day 1
1/4 or 3/12 on day 2
5/12 on day 3
Missy read 2/12 or 1/6 every day
Part B:
if day 1 is 1/12 and Friday is day 5 and she reads 2/12 per day
2/12 * 4 = 8/12
so 1/12 + 8/12 = 9/12 or 3/4 by Friday
Answer:
Monday: 1/12
Tuesday: 3/12
Wednesday: 5/12
Step-by-step explanation:
If 2.5 kg of tomatoes cost $8.25, how much will you pay for 7 kg?
Answer:
$2.10
Step-by-step explanation:
first we want to find for one kg. one kg is $0.30.
Multiply that by 7 and you get $2.10
Answer:
$23.10
Step-by-step explanation:
8.25 ÷ 2.5 = 3.3
7 x 3.3 = 23.10
you have to find out how much money you pay per kg
you pay $3.30 per kg
therefore you have to multiply the kg (7) by the price (3.30) and that's why you get $23.10
hope this helps :)
please help ill mark brainliest
Answer:
x=11.31
Step-by-step explanation:
Pythagorean theorem
12^2-4^2=x^2
144-16=x^2
x=11.31
Who can help me with this ?
Answer:
Growth
Step-by-step explanation:
Since the the consistent exponent 5/2 is greater than 1 it will grow
Lindsey plans on visiting her friend two states over. The distance to her friend is 1188 miles. If she leaves on Friday and drives 7 hours at a time at 60 mph, how many days will she travel? (Round your answer to whole days
Answer:
Do you mean 7 hours a day? If so:
7*60=420
1188/420=2.82ish which rounds to 3 days.
Step-by-step explanation:
K 4x J 6x – 8 L 152° What is the measure of angle KJL? O A. 640 O B. 78° 0 C. 840 O D. 88°
Answer:
D
Step-by-step explanation:
180-152= 28°
4x+6x-8+28=180
10x=160
x=16°
kjl= 6x-8= 88°
how do I find "Z"? of possible can you do a step by step?
Answer:
z = 7.5
Step-by-step explanation:
Polygon ABCD and polygon EFGH are similar, therefore, their sides would be proportional to each other. This means the ratio of their corresponding sides would be equal to each other.
BC corresponds to FG
CD corresponds to GH
Therefore:
8/6 = 10/z
4/3 = 10/z
Cross multiply
4*z = 10*3
4z = 30
4z/4 = 30/4
z = 7.5
How do you plot 74.7284 on a base-10 number line?
Step-by-step explanation:
About between of 70 and 80.
1/3(4 + 18)-2²
PLIS I need help :(
Answer:
10/3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
1/3(4 + 18) - 2²
Step 2: Evaluate
(Parenthesis) Add: 1/3(22) - 2²Exponents: 1/3(22) - 4Multiply: 22/3 - 4Subtract: 10/3What is the solution of the equation 5* - 1 = 45? Round your answer to the nearest ten-thousandth.
Answer:
The answer is 3.3652
Step-by-step explanation:
Find the number in the thousandth place
5
and look one place to the right for the rounding digit
2
. Round up if this number is greater than or equal to
5
and round down if it is less than
5
.
3.365
URGENT HELP 30 POINTS
Answer:The answer is pride 5
Step-by-step explanation:
Ayşe'nin boyu Selin'in boyunun iki katından 0,3 m
fazladır.
Selin'in boyu 0,66 m olduğuna göre Ayşe'nin
boyu kaç m'dir?
A) 1.26
B) 1,48
C) 1,62
D) 1,71
Answer:
english pls
Step-by-step explanation:
Answer:
metreyle ölçmek lazım WXQQDWRQCQ
HELP!
What is the determinant of [-4 3, -7 6]?
a. -24
b.-3
c. 3
d.45
Answer:
-3
Step-by-step explanation:
Answer:
It's B
Step-by-step explanation:
uh yo how do i make histogram
Answer:
u can use desmos to help u.
Step-by-step explanation:
Determine the type of bias involved. In a study of the effectiveness of wearing seat belts, a group of people who had survived car accidents in which they had not worn seat belts reported that seat belts would not have helped them. The type of bias involved in the given information i
Answer:
Non-response bias also known as Participation Bias
Step-by-step explanation:
The type of bias being demonstrated in this scenario is known as Non-response bias also known as Participation Bias. This is happening in this scenario because the individuals being surveyed have gone through the trauma of a car accident and survived it. To them they are stating that seat belts would not have helped since they do not want to believe that they could have done something to prevent their injuries. This causes them to say nothing or provide false information which ultimately ruins the results of the study.
Jolyn was paid $340 last week working 17 hours. What was Jolyn’s hourly pay? Do not include the units in your answer
Answer:
20
Step-by-step explanation:
It is mentioned that Jolyn made $340 in 17 hours last week. In order to evaluate this, you'll have to divide the money earned by the hours worked.
[tex]\frac{340}{17} =20[/tex]
Therefore, Jolyn makes $20 an hour as 20 x 17 = 340 which is correct,
Which ratio represents the number of orders for pepperoni pizza to cheese pizza?4:5 5:4 StartFraction 10 Over 8 EndFraction StartFraction 18 Over 10 EndFraction
Answer:
well cheese is better ;)
Step-by-step explanation:
Worth 20 points
Please answer these all in a fraction form! :) <3 ily all have a AMAZING day.
1. 1/8 ÷ 3/4 = ?
2. 3/5 ÷ 3/2 = ?
3. 4/1 ÷ 2/3 = ?
4.9/4 ÷ 6/5 = ?
5.22/4 ÷ 2/5 = ?
Answer:
1. 1/8 ÷ 3/4 = 1/6
2. 3/5 ÷ 3/2 = 2/5
3. 4/1 ÷ 2/3 = 6
4.9/4 ÷ 6/5 = 15/8
5.22/4 ÷ 2/5 = 261/80
Step-by-step explanation:
Hope this Helped
(3/4 - 1/5) ÷ (5/2 - 1/3) xfa ayuda con procedimiento rapido
Answer:
33/130
Step-by-step explanation:
3/4 - 1/5 = 11/20
5/2 - 1/3 = 2 and 1/6
11/20 divided by 13/6 = 33/130
A department of transportation's study on driving speed and miles per gallon for midsize automobiles resulted in the following data. Speed (Miles per Hour) 30 50 40 55 30 25 60 25 50 55 Miles per Gallon 29 26 26 22 29 31 21 35 25 26 Compute the sample correlation coefficient. (Round your answer to two decimal places.) Interpret the sample correlation coefficient. There is a strong negative relationship between the driving speed and miles per gallon. For driving speed between 25 and 60 miles per hour, higher speeds are associated with lower miles per gallon.
Answer:
R = -0.90 (2 decimal places)
Step-by-step explanation:
Given the data :
Speed (Miles per Hour) :
30
50
40
55
30
25
60
25
50
55
Miles per Gallon :
29
26
26
22
29
31
21
35
25
26
The correlation Coefficient, R shows the degree or level of relationship between the dependent and independent variable. A positive R value denotes a positive correlation while a negative R value denotes a negative relationship. R values should range between - 1 to +1 with values close to 1 and - 1 depicting strength while value of zero means no relationship exist.
Hence, R value of -0.90 depicts a strong negative relationship. Hence, higher speed are related to lower miles per gallon and vice versa.