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:
It would be the first one or second one
Step-by-step explanation:
the answer is up ahead
The answer is 0.00347222222
The answer is 32 your welcome
