The least-squares regression line equation treating the commute time is y = -0.047x + 69.1
How to find the least-squares regression line treating the commute time?From the question we have to treat, x, as the explanatory variable and the index score, y, as the response variable
So, we have the table of values to be:
x 5 20 30 35 60 84 105
y 69.3 68.1 67.3 67.2 66.0 65.6 64.0
Next, we enter the above values in a graphing calculator.
From the graphing calculator, we have the following calculation summary:
Sum of X = 339Sum of Y = 467.5Mean X = 48.4286Mean Y = 66.7857Sum of squares (SSX) = 7813.7143Sum of products (SP) = -370.4571The regression equation is represented as
y = bx + a
Where
b = SP/SSX = -370.46/7813.71 = -0.04741
a = MY - bMX = 66.79 - (-0.05*48.43) = 69.08177
So, we have
y = -0.04741x + 69.08177
Approximate
y = -0.047x + 69.1
Hence, the least-squares regression line equation treating the commute time is y = -0.047x + 69.1
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Which coupon would you use on this chair: $20 off or 20% off. Why? Be as convincing as you can. *
Answer:20% off
Explanation:it comes out cheaper in the end
5. The cost of my school exercise book was Rs. 10. Now she has to pay Rs
the same exercise book for Rs. 12. Let's calculate the percentage increses
price of the excercise book
[tex]\underline{\bf{\dag} \:\bold{As\;we\;know\: that\: :}}[/tex]
[tex]\sf Increase \% = \dfrac{(Value\;Increased)}{Initial\; Value} \times 100 \%[/tex]
According to the question,
→ Increase of Price = ( Rs. 12 - Rs. 10 )
⇒ Rs. 2
→ Initial Value = Rs. 10
Let's solve by putting the values in the formula !
[tex]\sf \leadsto \dfrac{2}{10} \times 100 \%[/tex]
⇝2×10%
⇝20%
∴ The percent of increase in price of that school exercise book is 20 %
[tex]\huge\bf\maltese{\underline{\red{Thanks}}}\maltese[/tex]
1) Which of these is a social goal of any economic system?
A) Economic Security
B) Production Standards
Economic Homogeneity
D) State-provided Employment
Answer:
b
Explanation:
Production standard is a criterion or yardstick or benchmark. It is used for measuring the production of the company. Production standards are fixed for raw materials, production process, tools and equipment, workers, conditions of work, speed of work, quantity of output, quality of output, etc
Jeremy is looking for a lost paperclip in his room He divides his room into a set of 12-
inch by 12-inch squares and creates a search grid. Jeremy begins in the top left comer
and searches each square grid working his way across the room slowly and methodically.
Jeremy's step-by-step approach is an example of using
Determine whether the data set is a population or a sample. Explain your reasoning.
The soil contamination levels at 10 locations near a landfill.
Choose the correct answer below.
) Farmer Ben has only ducks and cows 24 in total. He can’t remember how many of each he
has. He knows that the animals have a total of 66 legs. Assuming that each animal has all legs intact
and no extra limbs, how many of each animal does farmer Ben have? Draw a clear diagram to answer
this quest
could you also show your worrk plzz thanks help
Answer:
9 cows and 15 ducks
Explanation:
step 1: create a system of equations, using the variable c for cows and d for ducks.
step 2: solve for d in the first equation, then plug it into the second, so that we can solve for c.
step 3: solve for c
step 4: now that we know what c is, plug c back into the first equation, and solve for d
step 5: solve for d, which gives you 15 ducks. We found c in step 3, which is 9 cows.
how many movements can i make from a 30 squared rectangle if i can only move right and down?
Decribe five factors that could have a negative impact on listening comprehension of pupils
Answer:
visual support
your overall listening time
knowledge of how sound merge or get reduce
concentration
your pronunciation and grammer
Explanation:
hope it will help you much..
During operations outside declared hostilities, you may delay contact with local authorities.
Answer:
Correct: during operations outside declared hostilities, you may delay contact with local authorities.
Explanation:
According to the United States Military Code of Conduct which outlines how its officers and enlisted members are to behave during their enlistment, engagement whether on the battlefield or not in combat and or in the event they become a prisoner of war (POW). This Code of conduct consists of six articles to members of the United States Armed Force which act as an ethics guide and directive.
According to elements of Article II of the Code of Conduct during operations outside declared hostilities, you may delay contact with local authorities.