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Sophia Learning STAT1001: Introduction to Statistics UNIT 2 — MILESTONE 2 Answered 24/25 $18.04
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Sophia Learning STAT1001: Introduction to Statistics UNIT 2 — MILESTONE 2 Answered 24/25
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Sophia Learning STAT1001: Introduction to Statistics UNIT 2 — MILESTONE 2 24/25  that's 96% RETAKE 1 question was answered incorrectly. Naomi weighed 50 patients for a medical study using a scale that measures to the nearest whole pound. She then calculated the mean weight as 176 pounds, w...

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  • September 12, 2024
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UNIT 2 — MILESTONE 2

24/25




24/25  that's 96% RETAKE



 24 questions were answered correctly.
1 question was answered incorrectly.



1 
●

Naomi weighed 50 patients for a medical study
using a scale that measures to the nearest
whole pound. She then calculated the mean
weight as 176 pounds, with a standard deviation
of 12 pounds.

If the distribution is normal, what percent of
the data lies between 140 pounds and 212
pounds?



34%
●




https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33774775 6/13/24, 10 40 AM
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:

, 95%
●



68%
●



99.7%
 #



RATIONALE

Recall that if the data is normal, then the 68-
95-99.7 rule applies which states that 68% of
all data points fall within one standard
deviation of the mean, 95% of all data points
fall within two standard deviations of the
mean, and 99.7% of all data points fall within
three standard deviations of the mean.

140 pounds and 212 pounds are both 36
pounds from the mean of 176 pounds, which
is the same as three standard deviations (12
pounds * 3) in either direction. This tells us
that 99.7% of the data should lie between 140
cm to 212 cm.


CONCEPT
→ 68-95-99.7 Rule

Report an issue with this question




https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33774775 6/13/24, 10 40 AM
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:

, 2 
●

Ralph records the time it takes for each of his
classmates to run around the track one time. As
he analyzes the data on the graph, he locates
the mean and median time.

Which component of data analysis is Ralph
utilizing?



The overall shape of
● the data



The center of the
 # data set



An outlier in the data
● set



The overall spread of
● the data



RATIONALE

Recall that the mean and median are



https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33774775 6/13/24, 10 40 AM
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:

, measures of center. So by examining this,
Ralph is looking at the center of the data.


CONCEPT
→ Data Analysis

Report an issue with this question




3 
●

Dave drives to work. While driving the car over
nine days, he observes his daily average speed
and lists it in the table below.


Day Average Speed (MPH)

1 45

2 62

3 44

4 70

5 59

6 66

7 54

8 63

9 67




https://app.sophia.org/spcc/introduction-to-statistics-2/milestone_take_feedbacks/33774775 6/13/24, 10 40 AM
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