The random variable W is Normal, with a mean of 45 ounces and a standard deviation of three ounces.
<h3>How to describe the random variable?</h3>
The given parameters are:
- Sample size, n = 9
- Population mean, μ = 5 ounces
- Standard deviation, σ = 1 ounce
The mean of the 9 apples is:
μ = 5 ounces * 9
This gives
μ = 45 ounces
The variance of the 9 apples is:
σ² = 1 ounces * 9
This gives
σ² = 9 ounces
Take the square root of both sides, to calculate the standard deviation.
σ = 3 ounces
Since, the variable W is normal; the description of the variable W is (b)
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The geography of Greece was surrounded by ocean water to protect them from foreign invaders and allowed them to trade by sea. They were able to flourish as they expanded North.
