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Annualised monthly inflation is normally distributed with mean 2% and standard deviation 0.5%. A sample of...

Annualised monthly inflation is normally distributed with mean 2% and standard deviation 0.5%. A sample of 10 randomly chosen months is collected. What is the probability that the sample average of inflation is below 1.8814%?

a. 0.0102

b. 0.2266

c. 0.7734

d. 0.8413

Math   Statistics-And-Probability   
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