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Weekly household expenditure in a country is normally distributed with a mean $1000 and standard deviation of $200. 1.What is the probability that the average

Weekly household expenditure in a country is normally distributed with a mean $1000 and standard deviation of $200.

1.What is the probability that the average weekly expenditure for this sample will be more than $1100?

2.What is the probability that the weekly expenditure of a randomly selected household will be less than $800?

3.What is the probability that the weekly expenditure of a randomly selected household will be more than $1400?

4. If a random sample of 36 households is selected, what is the probability that the weekly expenditure of a randomly selected household will be between $800 and $1200?

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