Celsius and standard deviation


In a chemical experiment, a solution is to be kept at 70 degrees Celsius. At a randomly selected time, the actual temperature is a normal random variable with mean 70 degrees Celsius and standard deviation 0.4 degrees Celsius.

A) The middle 95% of time the temperature is between __ and __ ?

B) What is the 10th percentile?

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Basic Statistics: Celsius and standard deviation
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