Suppose the distribution of alumni salary has a mean of k per year and a standard deviation of k

Suppose the distribution of alumni salary has a mean of k per year and

alumni salary has a mean of k per year and a standard deviation of k The research office collected salary

Suppose the distribution of alumni salary has a mean of k per

year and a standard deviation of k The research office collected salary

Suppose the distribution of alumni salary has a mean

Suppose the distribution of

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Suppose the distribution of alumni salary has a mean of $50k per year and a standard deviation of $5k. The research office collected salary information from 121 business alumni. Its collected data show that the mean salary of their first job is $58k per year. Please show all work as I would like to learn this skill.
(a) What is the sample size and standard error of the data collected?
(b) What is the probability that the sampled alumni have a mean salary of $58k or more?

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Please show the necessary steps so that i can learn this skill properly. Thank you Suppose the distribution of alumni salary has a mean of $50k per...

Suppose the distribution of alumni salary has a mean of $50k per year and a standard deviation of $5k. The research office collected salary...