A marketing professor at Givens College is interested in the relationship between hours spent studying and total points earned in a course. Data collected on 10 students who took the course last quarter follow.
Hours Spent Studying Total Points Earned
45 40
30 35
90 75
60 65
105 90
65 50
90 90
80 80
55 45
75 65
a) Develop an estimated regression equation showing how total points earned is related to hours spent studying.
b) Test the significance of the model with alpha = .05.
c) Predict the total points earned by Mark Sweeney. He spent 78 hours studying.
d) Develop a 95% prediction interval for the total points earned by Mark Sweeney.

Answer:

∠DFA or can be written as AFD : ( as long as the vertex F is in the middle)

Step-by-step explanation:

Supplementary angles are angles when added together form a straight line (180°)

CFD makes a small part of that straight line and DFA (AFD) make up the other part

Answer:

Step-by-step explanation:

0.57 . im guessing

Answer:It will take the airplane 2.5 hours 2 hrs and 30 mins.

Step-by-step explanation:

1700/680= 2.5

so its 2.5 hrs

Answer:

2,304 years old

Step-by-step explanation:

Given: Jennifer age = 18, Invested = $1000 at 8% interest

To find: How old would she be when the account is $128,000?

Wrong solution

Solution: To figure out how old she will be when her account is $128,000, simply find the difference between her current account value by her current age, by dividing. Then multiply the result by the future account value.

Step 1: [tex]\frac{1000}{18} = 55.5555555556[/tex]

Rounding, that is; 55.56

Step 2: Now, multiply the result by the future account value.

[tex]55.56[/tex] × [tex]128000 = 7111680[/tex]

Correct solution

Solution: To find out how old she will be when her account is $128,000, set up a fraction;

[tex]\frac{1000}{8} = \frac{12800}{x}[/tex]

Step 1:  Divide the numbers

[tex]\frac{1000}{8} = \frac{128000}{x} \\\\\frac{500}{9} = \frac{128000}{x}[/tex]

Step 2: Multiply all terms by the same value to eliminate fraction denominators

[tex]\frac{500}{9} = \frac{128000}{x} \\\\x * \frac{500}{9} = x * \frac{128000}{x}[/tex]

Step 3:  Cancel multiplied terms that are in the denominator

[tex]x *\frac{500}{9} = x * \frac{128000}{x} \\\\x * \frac{500}{9} = 128000[/tex]

Step 4: Re-order terms so constants are on the left

[tex]x * \frac{500}{9} = 128000\\\\\frac{500}{9} x= 128000[/tex]

Step 5: Combine multiplied terms into a single fraction

[tex]\frac{500}{9} x = 128000\\\\\frac{500x}{9} = 128000[/tex]

Step 6: Multiply all terms by the same value to eliminate fraction denominators

[tex]\frac{500x}{9} = 128000\\\\9 * \frac{500x}{9} = 9 * 128000[/tex]

Step 7: Cancel multiplied terms that are in the denominator

[tex]9 * \frac{500x}{9} = 9 * 128000\\500

Answer:

what figure

Step-by-step explanation:

Answer:

76

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

You don't even have to do complicated the math as the numbers are complicated for a reason. Round 1.99 to 2 and 1.83 to 1. and the answer is 5.4, which is closest to answer B.

Answer:

9

Step-by-step explanation:

if you can actually see the graph the numbers go up by six.

6, 12, 18 and so on all the way to 6 x 5 which is 30 on the chart then you visualize off of the chart trying 6x6 6x7 6x8 and 6x9 until you get the answer of 54 the money price.  

Answer:

40%.

Step-by-step explanation:

-1/4, 3/2, and 1/6 are fractions, but 40% is not.

Answer:

A.

D: x [tex]\geq[/tex] -7

R: y [tex]\geq[/tex] -9

B.

D: x [tex]\geq[/tex] -3

R: All real numbers

C.

D: -10 < x < 10

R: -20 < y < 10

Answer:

I don't no the answer sorry

Answer:

The answer would be the 1st one.

Step-by-step explanation:

When you use a percentage calculator or look it up, you can shay 40 as a percent of 19 and the answer will be 47.5%. You could also divide and get your answer that way as well.

Hope that helps! If you get it wrong, please tell me so I could check my work.  Have a great rest of your day :)!

f Step-by-step explanatin

so you add the thing and you add this thing

stu   pid     i d i o t

Answer:

3/7

Step-by-step explanation:

1,2,3,4,5,6,7

The word problem is asking the PROBABILITY OF NOT SELECTING A PRIME NUMBER.

PROBABILITY: THE LIKELIHOOD OF AN EVENT.

There are 7 numbers in this data set. Of the seven numbers, four are prime numbers, three of them are not.

Therefore, the probability of not selecting a prime number is 3 in 7, or 3 out of 7 (3/7).

Answer:

Following are the responses to the given question:

Step-by-step explanation:

Test statistic:

[tex]t=\frac{(825-905)}{\frac{205}{\sqrt{(500)}}}[/tex]

  [tex]=\frac{(-80)}{\frac{205}{22.36}}\\\\=\frac{(-80)}{9.16}\\\\=-8.73[/tex]

Let the p-value=0

We reject H0 because of the p-value <0.01. We have evidence that college kids who pay their credit card bills in full per month have a mean balance of less than $905.

Answer:

Step-by-step explanation: < 180

Answer:

55 degrees (a)

Step-by-step explanation:

complementary means they equal 90 degrees

so 90-35= 55 degrees

Answer:

[tex]\frac{-752}{3}[/tex]

Step-by-step explanation:

Answer: -3

Step-by-step explanation:

To find the gradient...

Take any two points on the line and use the gradient fromula...

y2 - y1/ x2 - x1

Using points (0, 4) and (1,1):

1-4 / 1-0 = -3/1

Graident/slope = -3

Answer:

Step-by-step explanation:

(0, 4) (1, 1)

(1 - 4)/(1 - 0) = -3/1= -3

-3 is the slope

Answer: constant of proportionately is 0.66 repeating. (I think)

Answer:

520 students will attend

Step-by-step explanation:  sorry forgot to explain. An easy way to do it is to multiply the number your using (650) x the percentage (80%) here's an example:  60% of 1,005  multiply 60 x 1005 = 603

603 is 60% of 1005.  ;D

Answer: 520

Step-by-step explanation: A way to find even percentages (10%, 20%, etc) is to take 10% of the original number, in this case, it would be 65, and then multiply it by the first number in the percentage. In this case, it would be;

65 x 8 = 520

Hope this helps!

Answer:

The company's expenses and sales will both total $2944 once they have sold 736 oz of links

Step-by-step explanation:

cost: y = 736 + 3x

revenue: y = 4x

y = y, so using substitution

4x = 3x + 736

x = 736

They will therefore need to sell 736 oz of links, and when plugging in 736 as x into both the equations:

y = 736 + 3(736) = 2944

y = 4(736) = 2944

Answer:

system of equations problem

Answer:

5/4 + -x/3

Step-by-step explanation:

Operations on how to solve this problem:

1. Multiply the numbers.

2. Combine multiplied terms into a single fraction

3. Add the numbers

(To guide you to the answer, look at the file I uploaded)

Answer:

[tex]\huge{\boxed{\boxed{\tt { ✍ Answer :- }}}} \ [/tex]

Both the angles together form 90°

One angle = 29°

Other angle (s) = ?

[tex]s = 90 - 29 \\ s = 61[/tex]

✎ Value of s = 61°

Answer:

30 m vertically and 10 horizontally for a rectangle in a corner of the warehouse.