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Sophia Learning STAT1001: Introduction to Statistics Final Milestone Test Answered Attempt score 88% Fall 2024/2025. $18.04   Add to cart

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Sophia Learning STAT1001: Introduction to Statistics Final Milestone Test Answered Attempt score 88% Fall 2024/2025.

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  • Course
  • Sophia Learning STAT1001: Intro to Statistics
  • Institution
  • Sophia Learning STAT1001: Intro To Statistics

1 22/25  that's 88% RETAKE  22 questions were answered correctly. 3 questions were answered incorrectly. Jesse takes two data points from the weight and feed cost data set to calculate a slope, or average rate of change. A rat weighs 3.5 pounds and costs $4.50 per week to feed, while ...

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  • September 12, 2024
  • 41
  • 2024/2025
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  • Sophia Learning STAT1001: Intro to Statistics
  • Sophia Learning STAT1001: Intro to Statistics
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MILESTONE

22/25




22/25  that's 88% RETAKE



 22 questions were answered correctly.
3 questions were answered incorrectly.



1 


Jesse takes two data points from the weight
and feed cost data set to calculate a slope, or
average rate of change. A rat weighs 3.5
pounds and costs $4.50 per week to feed,
while a Beagle weighs 30 pounds and costs
$9.20 per week to feed.

Using weight as the explanatory variable, what
is the slope of the line between these two
points? Answer choices are rounded to the
nearest hundredth.



$1.60 / lb.





https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33814809 6/14/24, 9 12 AM
Page 1 of 41




:

, $5.64 / lb.




$0.31 / lb.




$0.18 / lb.
 #



RATIONALE

In order to get slope, we can use the formula:

.


Using the information provided, the two
points are: (3.5 lb., $4.50) and (30 lb., $9.20).
We can note that:




CONCEPT
→ Linear Equation Algebra Review



2 


Which of the following is a guideline for
establishing causality?




https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33814809 6/14/24, 9 12 AM
Page 2 of 41




:

, Do not consider
other possible

causes.



Check if the effect is
present when the
● response variable is
absent.



Keep all variables the
same to get duplicate

results.



Look for cases where
correlation exists
between the
 #
variables of a
scatterplot.




RATIONALE

Recall that correlation is not sufficient alone to
assess causality, however it is necessary. So
for something to be causal, it must have a
strong association.




https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33814809 6/14/24, 9 12 AM
Page 3 of 41




:

, CONCEPT
→ Establishing Causality



3 


Joe is measuring the widths of doors he bought
to install in an apartment complex. He
measured 72 doors and found a mean width of
36.1 inches with a standard deviation of 0.3
inches. To test if the doors differ significantly
from the standard industry width of 36 inches,
he computes a z-statistic.




What is the value of Joe's z-test statistic?



2.83
 #



-2.83




-1.81




1.81





https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33814809 6/14/24, 9 12 AM
Page 4 of 41




:

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