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MaRussiya [10]
3 years ago
6

The regression equation below relates the scores students in an advanced statistics course received for homework completed and f

or the subsequent midterm exam. Homework scores are based on assignments that preceded the exam. The maximum homework score a student could obtain was 500 and the maximum midterm score was 350. The regression line that was obtained is given by y=−84.4+0.91x . If a student had a homework score of 420 , the midterm score would be predicted to be (rounded to an integer ):a. 298b. 378c. 336d. None of the answer choices is correct
Mathematics
1 answer:
serg [7]3 years ago
7 0

Answer: d.) None of the answer choices is correct

Step-by-step explanation:

The homework score is an independent variable (known) and on the x-axis, while the midterm exam is the dependent variable, so it's on the y-axis

y = 0.91x - 94.4; and x=420

Substitute x as 420 into the equation.

y = 382.2 - 94.4 = 287.8, or approximately 288.

And this value isn't in the options above.

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A bag of potatoes weighs 15 pounds. How many kilograms is this?​
Tresset [83]

Answer:

6.8 kg

Step-by-step explanation:

1 pound = 0.4536 kg

15(0.4536) = 6.804

4 0
3 years ago
What are the next two terms for the following sequence 1 , 8 , 27 , 64
mixas84 [53]

Answer:

125 and 216

Step-by-step explanation:

Here,

a₁ = (1)³ = 1

a₂ = (2)³ = 8

a₃ = (3)³ = 27

a₄ = (4)³ = 64

So,

a₅ = (5)³ = 125

a₆ = (6)³ 216

Thus, The next two terms for the following sequence 1 , 8 , 27 , 64 is 125 and 216

<u>-TheUnknown</u><u>Scientist</u>

7 0
2 years ago
The Edward James Toy Company uses a Kanban system to make plastic wheels that are a component of several toys. The waiting time
pickupchik [31]

Answer:

N_c \approx 5.0

Step-by-step explanation:

From the question we are told that:

Waiting time for a container of the wheels during production T_w=0.25day

Average processing time is T_a=0.15 day per container

Wheel per container N_w=200

Total wheel per day D=2000

Policy variable of X=5%  

Generally the equation for Total number of container N_c is mathematically given by

N_c=DT(\frac{1+X}{N_w} )

Where

Total time T=T_w+T_a

T=0.15+0.25

Therefore

N_c=DT(\frac{1+X}{N_w} )

N_c=2000*0.40(\frac{1+0.5}{200} )

N_c=(\frac{840}{200} )

N_c=4.2

N_c \approx 5.0

Therefore the number of Kanban containers needed for the wheels is

N_c \approx 5.0

3 0
2 years ago
Jonah’s Restaurant reports net income of $20,000 during the year 2015. It distributes a dividend of $6,000 to its shareholders.
AlekseyPX
Retention ratio = (net income - dividends) / net income

retention ratio = (20,000 - 6000) / 20000 = 14,000/20,000 = 0.7 = 70%
3 0
3 years ago
1- Emily collected $950 selling Girl Scout cookies all day Saturday. Emily's Troop collected 10 times as much as she did. How mu
VikaD [51]
1. $9500 because 10*950=9500
2. $95 because 950/10=95

( can explain further )
5 0
2 years ago
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