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Andre45 [30]
3 years ago
7

A scientist estimates that the mean nitrogen dioxide level in a city is greater than 30 parts per billion. To test this estimate

, you determine the nitrogen dioxide levels for 31 randomly selected days. The results (in parts per billion) are listed below.
Mathematics
1 answer:
irina [24]3 years ago
3 0

Answer:

Step-by-step explanation:

incomplete. no results listed below

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