1. A random sample of size 100 was taken from a population with a mean of 5.8 and a a standard deviation of 1.2. What is the probability that the sample mean is greater than 5.7 but less than 6.1?
2. You draw a random sample of size n = 64 from a population with mean µ = 50 and standard deviation σ = 16. Approximately what is the probability that the sample mean is above 54?
2. You draw a random sample of size n = 64 from a population with mean µ = 50 and standard deviation σ = 16. Approximately what is the probability that the sample mean is above 54?
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