angelhusted213
08.12.2021 •
Mathematics
Suppose that weekly earnings of part-time pet-sitters in a certain city are normally distributed with a mean of $80 and a standard deviation of $25. Ten part-time pet-sitters are randomly surveyed. What is the probability that the sum of their earnings is less than $1000?
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Ответ:
201.14 ft
Step-by-step explanation:
C = 2 π r = π d
C = × 64 ≈ 201.14 ft