(a) A population has a mean of 0.1 and standard deviation of 2.1. Find the probahility that the mean of a random sample of size 900 will be negative. (b) The standard deviation of the amount of time it takes a college student to complete a project is 40 minules. A random sample of 64 students is taken. What is the probahility (p) that the sample mean will he more than 8 minutes less than the population mean ?

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