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Harlamova29_29 [7]
3 years ago
5

Construct a linear regression model that uses Units to predict Prod Cost. Round the model's coefficients to three decimal places

; add trailing zeros as needed.
The regression model is ŷ = +

46.75 92.64
42.18 88.81
41.86 86.44
43.29 88.8
42.17 86.38
41.78 89.87
41.47 88.53
42.21 91.11
41.03 81.22
39.84 83.72
39.15 84.54
39.2 85.66
39.52 85.87
38.05 85.23
39.16 87.75
38.59 92.62
36.54 91.56
37.03 84.12
36.6 81.22
37.58 83.35
36.48 82.29
38.25 80.92
37.26 76.92
38.59 78.35
40.89 74.57
37.66 71.6
38.79 65.64
38.78 62.09
36.7 61.66
35.1 77.14
33.75 75.47
34.29 70.37
32.26 66.71
30.97 64.37
28.2 56.09
24.58 50.25
20.25 43.65
17.09 38.01
14.35 31.4
13.11 29.45
9.5 29.02
9.74 19.05
9.34 20.36
7.51 17.68
8.35 19.23
6.25 14.92
5.45 11.44
3.79 12.69
Mathematics
1 answer:
Anna [14]3 years ago
5 0

Answer:

ummmmmmmmmm what kind of math are u doing

Step-by-step explanation:

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Terry and Callie do word processing. For a certain prospectus Callie can prepare it two hours faster than Terry can. If they wor
Dahasolnce [82]

Time taken by jerry alone is 10.1 hours

Time taken by callie alone is 8.1 hours

<u>Solution:</u>

Given:- For a certain prospectus Callie can prepare it two hours faster than Terry can

Let the time taken by Terry be "a" hours

So, the time taken by Callie will be (a-2) hours

Hence, the efficiency of Callie and Terry per hour is \frac{1}{a-2} \text { and } \frac{1}{a} \text { respectively }

If they work together they can do the entire prospectus in five hours

\text {So, } \frac{1}{a-2}+\frac{1}{a}=\frac{1}{5}

On cross-multiplication we get,

\frac{a+(a-2)}{(a-2) \times a}=\frac{1}{5}

\frac{2 a-2}{(a-2) \times a}=\frac{1}{5}

On cross multiplication ,we get

\begin{array}{l}{5 \times(2 a-2)=a \times(a-2)} \\\\ {10 a-10=a^{2}-2 a} \\\\ {a^{2}-2 a-10 a+10=0} \\\\ {a^{2}-12 a+10=0}\end{array}

<em><u>using quadratic formula:-</u></em>

x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}

x=\frac{12 \pm \sqrt{144-40}}{2}

\begin{array}{l}{x=\frac{12 \pm \sqrt{144-40}}{2}} \\\\ {x=\frac{12 \pm \sqrt{104}}{2}} \\\\ {x=\frac{12 \pm 2 \sqrt{26}}{2}} \\\\ {x=6 \pm \sqrt{26}=6 \pm 5.1} \\\\ {x=10.1 \text { or } x=0.9}\end{array}

If we take a = 0.9, then while calculating time taken by callie = a - 2 we will end up in negative value

Let us take a = 10.1

So time taken by jerry alone = a = 10.1 hours

Time taken by callie alone = a - 2 = 10.1 - 2 = 8.1 hours

3 0
3 years ago
C and d please help me im stuck i promise i will give a thank
Troyanec [42]

Answer:

attach the graph in orfer for us to answer

Step-by-step explanation:

3 0
3 years ago
Two students from a group of eight boys and 12 girls are sent to represent the school in a parade.
harkovskaia [24]
The answer is 62/95. You determine this by calculating the probability of both students being girls. 

Probability first student is girl: 12/20
Probability second student is girl: 11/19
Multiply 12/20 * 11/19 = 132/380 or 0.347
Probability of both students not being girls: 1 - 0.347 = 0.653 or 62/95
4 0
3 years ago
Read 2 more answers
H(1) = -26<br> h(n) = h(n-1) x (-9)<br><br> Find an explicit formula for h(n).<br><br> h(n)= ___
ValentinkaMS [17]

Answer:

you do not have to state explicitly which limit law(s) you are using. 1 - 5n ... Q: 9) n(x) = 2x - 2 g(x)= x2 + 5 Find h(g(1) A) 5 B) 10 C) 21 D) 40.

Step-by-step explanation:

4 0
3 years ago
34 + 10 + 100 = 12 x 12 Is this correct?
Harrizon [31]

Answer:ig so

Step-by-step explanation:34+10+100=144

12x12=144 same thing

4 0
3 years ago
Read 2 more answers
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