# Probability

The mean salary offered to students who are graduating from Coastal State University this year is 24275 , with a standard deviation 3712 of . A random sample of 75 Coastal State students graduating this year has been selected. What is the probability that the mean salary offer for these 75 students is 25000 or more?

I need help finding which kind of probability it is, and how to solve it.

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#### Solution Preview

Hello

population mean = 24275

population standard deviation = 3712

Number of students or sample size n = 75 (>30)

Hence we can use normal probability distribution. For sample size greater than 30 standard normal probability distribution is used.

We need to find the probability that mean salary ...

#### Solution Summary

Solution describes how to calculate probability .

$2.19