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1. Suppose that the random variable X has a normal distribution with mean 0 and variance 900. What is P ( X < 11.1)? 2.

1. Suppose that the random variableXhas a normal distribution with mean 0 and variance 900. What is P(X < 11.1)?

2. Suppose we have a sample of 4 observations. All of the values lie between 0 and 20 (inclusive, and repeats are allowed). What is the largest possible value of the standard deviation?

[Give your response to at least 3 decimal places. Give only the number, and do not include any extra characters or symbols.]

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