![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 20.09.2020 02:01, mariah16powell
1) The students in Mrs. Campbell's probability and statistics class scored an average of an 83 on their unit 1 posttest
with a standard deviation of 3 points.
2) In a study of females from 15 - 25 years old, it was found that on average females spend 5 hours a day on their
phones with a standard deviation of 2 hours.
3) of 1,000 people who had lunch at the mall food court, each person spent an average of $8 on lunch with a
standard deviation of $6.
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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