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Scores of the first test in Econ 261 follow a normal distribution with mean 70 and standard deviation 5. Compute the following probabilities.P(X≥60) is:

Question

Scores of the first test in Econ 261 follow a normal distribution with mean 70 and standard deviation 5. Compute the following probabilities.

P(X≥60) is:

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Step 1

Let X be the score of the first test in Econ. X follows normal distribution with mean 70 and standard deviation 5.

The probability of X ≥ 60 can be found as,

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Step 2

Using the Excel formula, ‘=NORM.DIST(60,70,5,TRUE)&rsqu...

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