Sophia statistics unit 2 Study guides, Class notes & Summaries
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023 
If we first note the denominator of 
 
Then, getting the z-score we can note it is 
 
This tells us that 36.1 is 2.83 standard deviations above the value of 36. 
 
Note that when you round some values you may get slightly different results, but the results should be relatively close to this final calculated value. 
 
CONCEPT 
Z-Test for Population Means 2 
 
Emile has calculated a one-tailed z-statistic of -1.97 and wants ...
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Sophia Statistics Unit 2 Milestone practice questions DETAILED ANSWER KEY Questions and Answers (latest Update 2023), 100% Correct and Complete, Highly Recommended, Download to Score A+
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Sophia Statistics Unit 2 Milestone practice questions DETAILED ANSWER KEY Questions and Answers (latest Update 2023), 100% Correct and Complete, Highly Recommended, Download to Score A+ 
The manager went over the sales of mobile phones at the store and found that the mean sale was 45, with a 
standard deviation of 4. On a particular day, 52 mobile phones were sold. 
What is the z-score of the sale of mobile phones on that day? 
-28 
28 
1.75 
-1.75 
RATIONALE 
Recall that the z-score can be cal...
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MAT 240 SOPHIA (Introduction to Statistics) UNIT 2 MILESTONE 2 QUESTIONS AND ANSWERS WITH RATIONALES VERIFIED by EXPERT (SNHU)
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MAT 240 SOPHIA (Introduction to 
Statistics) UNIT 2 MILESTONE 2 
QUESTIONS AND ANSWERS WITH 
RATIONALES VERIFIED by EXPERT 
(SNHU
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023
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Sophia Statistics Unit 2 Milestone 2 / Score 22/26 Passed! Answers and rationales
- Exam (elaborations) • 22 pages • 2022
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UNIT 2 — MILESTONE 2 
Score 22/26 
You passed this Milestone 
22 questions were answered correctly. 
4 questions were answered incorrectly. 
1 
The manager went over the sales of mobile phones at the store and found that the mean sale was 45, with a 
standard deviation of 4. On a particular day, 52 mobile phones were sold. 
What is the z-score of the sale of mobile phones on that day? 
-28 
28 
1.75 
-1.75 
RATIONALE 
Recall that the z-score can be calculated with the following formula: 
The g...
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023 STATISTICS MISC UNIT 5– MILESTONE 5
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 
2023 
STATISTICS MISC UNIT 5– MILESTONE 5 
You passed this Milestone 
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 
-1.81...
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023
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Sophia Statistics Unit 2 Challenge 1
- Exam (elaborations) • 11 pages • 2023
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The following table shows the types of homes in which residents were living in 2010. 
2010 Housing Data 
Type of Home Frequency 
Single-Family Detached 1748 
Single-Family Attached 442 
Small Apartment Building 1247 
Large Apartment Building 1056 
Mobile Home 173 
Other 134 
To accurately display the mobile home category on a pie chart, an angle that is approximately ________ would need to be created. 
 a.) 
13 degrees 
 b.) 
79 degrees 
 c.) 
131 degrees 
 d.) 
94 degrees 
The follo...
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023 STATISTICS MISC UNIT 5– MILESTONE 5
- Exam (elaborations) • 22 pages • 2023
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STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 
2023 
STATISTICS MISC UNIT 5– MILESTONE 5 
You passed this Milestone 
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 
-1.81...
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