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maks197457 [2]
3 years ago
11

In the Fall STA 2023 Beginning of the Semester Survey, students were asked how many parties they attended every week and how man

y text messages they sent per day. The researcher decided to make the number of parties attended per week the explanatory variable and the number of text messages sent per day the response variable. The least squares regression line for this relationship is y-hat = 64.96 + 25.41x. One student attended 3 parties that week and sent 200 text messages per day. What is the residual?
A.58.81
B.-106.63
C.5146.96
D.4946.96
E.96.63
F.-96.63
Mathematics
1 answer:
algol133 years ago
7 0

Answer:

A.58.81

Step-by-step explanation:

x = number of parties attended

y = number of text messages sent

The residual is the difference between the actual number of text messages sent (200) and the number of texts predicted by the regression model:

y=64.96+25.41x\\y=64.96+25.41*3\\y=141.19

The residual is:

R=200 - 141.19\\R=58.81

The answer is alternative A.58.81

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Answer:

x = 6

Step-by-step explanation:

The volume (V) of the triangular prism is calculated as

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The volume of a cube is

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x = \sqrt[3]{216} = 6

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2 years ago
-5(x+7)<10. What does x equal?
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Answer:

X>-9

Step-by-step explanation:

Distribute

-5x-35<10

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3 years ago
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8 0
3 years ago
Sebastian swam laps every day in the community swimming pool. He swam 45 minutes each day, 5 days each week, for 12 weeks. In th
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Answer:

\text{Average rate}=\frac{\text{40 laps}}{\text{ hour}}

Step-by-step explanation:

Please consider the complete question.

Sebastian swan laps every day in the community swimming pool. He swam 45 minutes each day, 5 days each week, for 12 weeks. In that time, he swam 1800 laps. What was his average rate in laps per hour?    

Let us convert time taken into hours as:

\text{Days}=5\times 12=60

\text{Minutes}=60\times 45

1 hour = 60 minutes. To convert minutes into hours, we will divide total minutes by 60.

\text{Hours}=\frac{60\times 45}{60}=45

Now, we will divide 1800 by 45 to find average rate in laps per hour as:

\text{Average rate}=\frac{\text{1800 laps}}{\text{45 hours}}

\text{Average rate}=\frac{\text{40 laps}}{\text{ hour}}

Therefore, Sebastian's average rate is 40 laps per hour.

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3 years ago
Need help with this please
Sav [38]
Your going to have to use the distance formula for these questions which is the square root of (x sub 2 - x sub 1) + (y sub 2 - y sub 1). For number 1 your coordinates are (-5,5) and (1,-2). Substituting these values into the formula your answer for number 1 is 9.2.
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3 years ago
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