The scatter plot shows the time spent watching TV, x, and the time spent doing homework, y, by each of 24 students last week.
(a) Write an approximate equation of the line of best fit for the data. It doesn't have to be the exact line of best fit.
(b) Using your equation from part (a), predict the time spent doing homework for a student who spends 15 hours watching TV.
Help please!!!!
Answers
Answer:
y = - 0.833 + 29.5
y = 17
Step-by-step explanation:
Drawing a best fit line through the data points:
The approximate regression model would have an intercept of about 29.5
The slope = Rise / Run = (y2 - y1) / (x2 - x1)
The slope = (5 - 25) / (27 - 3) = 20 / 24 = -0.8333
The regression equation is thus :
y = mx + c
m = slope ; c = intercept
y = - 0.833 + 29.5
B)
x = 15
y = - 0.833(15) + 29.5
y = -12.5 + 29.5
y = 17
Approximately 17 hours watching TV
Related Questions
Pls answer this question!! (will give brainliest)
Answers
Answer:
Step-by-step explanation:
The answer is A simple
2.1 There are 5 red balls, 3 blue balls and 2 green balls in a box. Suzie takes at random a ball from the box and gives it to her friend. She then takes at random another ball from the box.
2.1.1 Write down the sample space of this experiment. [2]
2.1.2 Work out the probability that both balls are of the same colour.
Answers
Answer:
23
Step-by-step explanation:
I just did it.
What is the sales tax
On a camera priced at $110 if the sales tax rate is 6.1%
WILL GIVE BRAINKISR
Xx
X
X
Answers
Answer:
Before Tax Price: $110.00
Sale Tax: 6.10% or $6.71
After Tax Price: ($116.71)
Step-by-step explanation:
Suppose you deposit $100 in a savings account where the interest earned is compounded continuously at a rate of 2%. How many years will it take the balance in the account to reach $10,000 (round your answer to
the nearest year)?
A. 231 years
B. 230 years
C. 234 years
D. 232 years
Answers
Answer:T = 230.259 years
So choice B
Step-by-step explanation:
T = r / 100
T : 2 /100 = 0.02 per year
Now let’s solve for t using this equation
In ( A/P) / r
In ( 10000/100) / 0.02
Put this on calculator u get 230.259 years and now to the nearest year
is 230 years.
Hope this help
Comparative financial statement data for Carmono Company follow: This Year Last Year Assets Cash $ 8.50 $ 16.00 Accounts receivable 54.00 47.00 Inventory 97.50 84.40 Total current assets 160.00 147.40 Property, plant, and equipment 237.00 198.00 Less accumulated depreciation 47.20 35.40 Net property, plant, and equipment 189.80 162.60 Total assets $ 349.80 $ 310.00 Liabilities and Stockholders’ Equity Accounts payable $ 58.50 $ 48.00 Common stock 126.00 97.00 Retained earnings 165.30 165.00 Total liabilities and stockholders’ equity $ 349.80 $ 310.00 For this year, the company reported net income as follows: Sales $ 950.00 Cost of goods sold 570.00 Gross margin 380.00 Selling and administrative expenses 360.00 Net income $ 20.00 This year Carmono declared and paid a cash dividend. There were no sales of property, plant, and equipment during this year. The company did not repurchase any of its own stock this year. Required: 1. Using the indirect method, prepare a statement of cash flows for this year. 2. Compute Carmono’s free cash flow for this year.
Answers
A point of sale transaction occurs when a debit card is used to purchase items at a grocery store. Please select the best answer from the choices provided.
Answers
Answer:
True or T
I tested on edge
Answer:
Its true
Step-by-step explanation:
right on edg 2022
You want to know if environmental conditions affect feeding behavior in rats. You conduct a study measuring the amount of food pellets rats eat when under the following experimental conditions: (lights off; in a cold room), (lights on; in a cold room), (lights off; in a warm room), (lights on; in a warm room).
What type of statistical test should be conducted given the format of these data?
a. Correlation
b. Repeated measures ANOVA
c. Independent measures; Factorial (two-way) ANOVA
d. Independent measures; one-way ANOVA
Answers
Answer:
c. Independent measures; Factorial (two-way) ANOVA
Step-by-step explanation:
The answer to this question is the independent measures one way ANOVA. This is as we have these conditions light on or off and cold or warm room. Now we have to check how these factors are able to affect the amount of food pellets eat whenever they are in these experimental conditions.
option c is the correst answer. A factorial or two way anova is one with more than one factor or explanatory variable.
What does Masi help Janya realize?
Answers
Masi help Janya realize, that the Janya's family has a long tradition of protecting nature. Option D is the correct option.
What is passage reading?Passage reading is to read a passage carefully to learn about a topic as well as enhance the vocabulary. Some question related to the passage is asked in passage reading.
Summary of the given paragraph,
Janya thinks that the concern of her for the tree or the nature is nonsense as there is no meaning of it.Mesi helped Janya to realize that to protect the environment and grow tree is utmost duty of every human being.Mesi told to Janya about her family, which has a long tradition of protecting nature.Thus, Masi help Janya realize, that the Janya's family has a long tradition of protecting nature. Option D is the correct option.
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What is the base of the exponential function?
0.625
0.16
0.86
1.16
answer - 0.86
Answers
Answer:
the answer might be 0.86 I don't know though
Find the value of x such that the data set has the given mean.
99, 122, 107, 114, 107, x; mean 114
Answers
9514 1404 393
Answer:
x = 135
Step-by-step explanation:
The sum of the differences from the mean of the known numbers is
-15 +8 -7 +0 -7 = -21
The value of x must have a difference from the mean that is the opposite of this sum. (That is, the total of differences from the mean of all the numbers must be zero.)
x = 114 +21
x = 135
help me with these equations
Answers
Answer:
8. [tex]\frac{8r^{2} }{q^{2} }[/tex]
10. [tex]12x^{-1} y^{6} z[/tex]
Step-by-step explanation:
8. [tex]\frac{16p^{6}qr^{8} }{2(p^{2}qr^{2})^{3} }[/tex] = [tex]\frac{16p^{6}qr^{8} }{2p^{6}q^{3}r^{6} }[/tex]= [tex]\frac{8r^{2} }{q^{2} }[/tex]
10. [tex]4x^{2} y[/tex] . 3 [tex](-2x^{4} y)^{0}[/tex] . [tex]x^{-3} y^{5} z[/tex] = [tex]4x^{2}y[/tex] . [tex]3(1)[/tex] . [tex]\\x^{-3} y^{5}z[/tex] = [tex]\\12x^{-1}yx^{6}z[/tex]
A random sample of three-year-old thoroughbred racehorses is taken, and the 95% confidence interval for the true mean height (in inches) is calculated to be (62.0, 68.4). Data about horses from the historical record of the three-year old thoroughbred racehorses who have run in the Kentucky Derby is examined, and the mean height is calculated to be 68.25 inches. Does this sample provide convincing evidence that three-year-old thoroughbred racehorses are, on average, shorter than those that run in the Kentucky Derby
Answers
Options :
Yes, 68.25 is near the top of the confidence interval.
Yes, the value of 68.25 is a number in the confidence interval.
Yes, 68.25 is much higher than the sample mean of all three-year-old thoroughbred racehorses, which was 65.2 inches.
No, the value of 68.25 is a number in the confidence interval.
No, the horses that run in the Kentucky Derby are a subset of all three-year-old thoroughbred racehorses
Answer:
No , the value of 68.25 is a number in the confidence interval.
Step-by-step explanation:
The confidence interval gives a range if values which is used in establishing the significance of an hypothesis. If the true mean falls within the confidence interval drawn, then our finding is insignificant and the null hypothesis will stand. However, if the true mean does not fall within the interval, then our result is considered significant and the null is thus rejected.
Since true mean exists within the confidence interval, then we conclude that the sample does not provide convincing evidence that three-year-old thoroughbred racehorses are, on average, shorter than those that run in the Kentucky Derby
Seiko has 7 coins that add up to $1.10. She has the same number of quarters as dimes. The rest of the coins are nickels. How many of each coin does she have?
Answers
Answer:
She would have 3 quarters, 3 dimes, and 1 nickel.
Which of the following best describes the effect the moon has on the tides?
A
The gravity of the moon pulls the ocean, which causes the tides.
B
When the moon is invisible in the sky, tides cannot be seen.
C
Tides only happen at night when the moon is visible.
D
The moon’s light makes it possible to see the tides at night.
Answers
Answer: A
Step-by-step explanation:
The moon's gravity pulls water away from Earth, causing high tide on the side of Earth facing the moon.
Garth picked peaches from his grandfather's orchard. He picked more than 5.7 pounds but less than 7 pounds. which of the following could be the exact number of pounds of peaches he picked?
Answers
Answer:
i believe the answer is 6 pounds:)
Step-by-step explanation:
Where I’ll the pain go if your leg is cut of?
Answers
The same spot where you cut your leg
Divide using common factors.
(x^2 + 3x – 4) ÷ (x - 1)
Answers
Answer: Hello Luv.......
Factor the numerator and denominator and cancel the common factors.
x+4
Step-by-step explanation:
Hope this helps.
Mark me brainest please.
Anna ♥
Math grade 9 , see the photo and solve plzzz i need it very fassttt plzz
Answers
Help ME ASAP PLZZZZZ!!!!!!!!!
On a map, 3 centimeters represents 500 miles.
a) Two cities are 9 centimeters apart on the map. How many miles apart are the two cities?
b) Two national parks are 750 miles apart. How many centimeters apart are the two parks on the map?
Answers
Answer:
a.1,500 miles apart b.1.5 centermeters
Step-by-step explanation:
give me brainleist thank and 5 star!
a) The distance between the two cities is 1500 miles
b) The distance between the two national parks on the map is 4.5 cm
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
The scale on the map is
3 cm : 500 miles
a)
Let the distance between the 2 cities be = A
Now , the equation is
When the distance between the 2 cities is 500 miles , the scale on the map is 3 cm
So ,
3 cm = 500 miles
9 cm = 3 x 3 cm
9 cm = 500 x 3 miles
= 1500 miles
Therefore , the distance between the two cities is 1500 miles
b)
The distance between the two national park is 750 miles
Now , the equation is
When the distance between the 2 cities is 500 miles , the scale on the map is 3 cm
So ,
500 miles = 3 cm
1 mile = 3 / 500 cm
750 miles = ( 3 x 750 ) / 500 cm
750 miles = 3 x 1.5 cm
= 4.5 cm
Therefore ,
The distance between the two national parks on the map is 4.5 cm
Hence , a) The distance between the two cities is 1500 miles
b) The distance between the two national parks on the map is 4.5 cm
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Suppose your friend's parents invest 15,000 in an account paying 7% compounded annually. What will the balance be after 5 years?(round to the nearest cent as needed)
Answers
Answer:
FV= $21,038.28
Step-by-step explanation:
Giving the following information:
Initial investment (PV)= $15,000
Interest rate (i)= 7% compounded annually
Number of periods (n)= 5
To calculate the future value (FV), we need to use the following formula:
FV= PV*(1 + i)^n
FV= 15,000*(1.07^5)
FV= $21,038.28
Help pls show work if needed!ALSO GIVING BRAINLIST
Answers
Answer:
You add a bar till the 2 for the 9-10. You add bars till 6 for the 11- 12. You add bars till 8 for the 13-14. You add bars till the 4 for the 15-16.
Step-by-step explanation:
Hey guys marking brainliest
What should I add in the background
Answers
Answer:
A mountain?
Please keep things on topic
Answer:
answer: Yes! Add some color!
What is the scale factor of a pair of figures whose preimage has coordinates (-1, 1) (3,0) and (1, -4) and whose image has coordinates (0.5, 0.5), (1.5, 0) and (0.5, -2)?
A. 1/4
B. 1
C. 0.5
D. 5
E. 3
Answers
Answer:
0.5
Step-by-step explanation:
Find the greatest power of 3 that is a divisor of 100!
Answers
Answer:
33 + (11-1) + (3-1)2 + (1-1)3 = 47
Div with 100 indiv power of 3 and adding
3 = 33
9 = 11
27 = 3
81= 1
total = 48
A triangle with side lengths of 8 cm, 14cm and 20 cm classify it as acute obtuse or right
Answers
Answer:
Obtuse
Step-by-step explanation:
The pythagorean theorem: a^2+b^2=c^2
Right triangles: a^2+b^2=c^2
Acute triangles: a^2+b^2>c^2
Obtuse triangles: a^2+b^2<c^2
8^2+14^2 ? 20^2
64+196 ? 400
260 < 400
The triangle is obtuse.
Solve the rational equation: 8- 6/x =5+ 12/x
A. x= 1/6
B. There is no solution.
C. X = 6
D. x= -4
Answers
Answer:
D I believe
Step-by-step explanation:
Answer:
x = 6
Step-by-step explanation:
Examine this algebraic expression:
4x + y - 1/2 + 12
What are the variables?
What are the coefficients?
What are the constants?
Answers
Answer:
the variables are 4x and y the coefficients are 12 and the constant is 1/2
The starting salary of business students in a university is known to be normally distributed. A random sample of 18 business students results in a mean salary of $46,500 with a standard deviation of $10,200. Construct the 90% confidence interval for the mean starting salary of business students in this university. Multiple Choice 46,500 ± 1.740 ( 10,200 / 18−−√ ) 46,500 ± 1.330 ( 10,200 / 18−−√ ) 46,500 ± 1.734 ( 10,200 / 18−−√ ) 46,500 ± 1.645 ( 10,200 / 18−−√ )
Answers
Answer:
[tex]46500 \pm 1.74\frac{10200}{\sqrt{18}}[/tex]
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 18 - 1 = 17
90% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 17 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.9}{2} = 0.95[/tex]. So we have T = 1.74
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 1.74\frac{10200}{\sqrt{18}}[/tex]
Confidence interval:
Sample mean plus/minus margin of error. So
[tex]46500 \pm 1.74\frac{10200}{\sqrt{18}}[/tex]
look at pic 10 PTS I NEED THIS QUESTION I WILL TELL U HOW TO GET UNLIMITED POINTS TELL ME IF U NEED THE MULTIPLE CHOICE ANSWERS
Answers
Answer:
68 square unites
Step-by-step explanation:
Draw a live from (-8,2) to (0,2) and up to (0,4). This divides it into three shapes.
Big triangle = 0.5x8x12=48
Little triangle = 0.5x2x4=4
Rectangle = 8x2=16
48+4+16=68
Write 375 cm3 in millilitres.
Answers
Answer:
I mean they have the same volume... so it's 375ml.