Suppose that at a large state university graduate research assistants are paid by the hour Data from the personnel office show the distribution of hourly wages paid to graduate students across the campus is approximately normal with a mean of $12 00 and a standard deviation of $2 50 Determine a the...

Suppose that at a large state university graduate research assistants are paid by the hour. Data from

Question:

Suppose that at a large state university graduate research assistants are paid by the hour.
Data from the personnel office show the of hourly wages paid to graduate students across the campus is approximately normal with a mean of $12.00 and a standard deviation of $2.50. Determine a. the percentage of graduate assistants who can earn an hourly wage of $15 or more.
b. the probability of selecting at random from personnel files a graduate assistant who earns an hourly wage of $15 or more.
c. the percentage of graduate assistants who earn between $10 and $12 per hour.
d. the probability of selecting at random from personnel files a graduate assistant who earns between $10 and $12 per hour.
e. the percentage of graduate assistants who earn an hourly wage of $11 or less.
f. the probability of selecting at random from the personnel files a graduate assistant who earns an hourly wage of $11 or less.
g. the probability of selecting at random from personnel files a graduate assistant whose hourly wage is extreme in either direction – either $10 or below or $14 or above.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...