The answer is below the question. I'm wondering how to get that answer using Excel?

Suppose a research rm conducted a survey to determine the mean amount steady smokers spend on cigarettes during a week. A sample of 100 steady smokers revealed that the sample mean is $20 and the sample standard deviation is $5. What is the probability that a sample of 100 steady smokers spend between $19 and $2]? 0.9544