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Examen
Sophia Statistics Unit 2 Milestone,.
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---23octubre 20232023/2024A+
- 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 given value is 52 phones, the mean is 45 phones, and the standard deviation is 4 phones. Plug these values 
in to get the following z-score: 
This ...
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