A)
Let X be the food expenditure of a family.
Let the population mean of an expenditure of a family be.
Let the population standard deviation of an expenditure of a family be.
The proportion families spend more than $30 but less than $490 per month on food is,
Answer:
1.01 × 10⁴ - scientific notation
10,100 - decimal notation
Answer:
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Step-by-step explanation:
Answer:
I don't understand what this is.
Step-by-step explanation: