If the cholesterol levels of adults are normally


1. Suppose the daily amount of solar radiation in Los Angeles is normally distributed with mean 450 calories and standard deviation 50. Determine the probability that for a randomly chosen day, the amount of solar radiation is between 350 and 550.

2. If the cholesterol levels of adults are normally distributed with mean 230 and standard deviation 25, what is the probability that a randomly sampled adult has a cholesterol level greater than 260?

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Basic Statistics: If the cholesterol levels of adults are normally
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