SOCL 2201-HWS Due on: September 27sh(Lab) 1. (45 pts.). Suppose that at a large
ID: 3304010 • Letter: S
Question
SOCL 2201-HWS Due on: September 27sh(Lab) 1. (45 pts.). 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 graduates across the campus is approximately normal with a mean of $15.50 and a standard deviation of $4.00. Determine: a. the probability of selecting at random from personnel files a graduate student who earns an hourly wage of $20 or more. between $11 and $13 per hour. wage is extreme in either direction-either $10 or below or $21 and above. b. the probability of selecting at random from personnel files a graduate assistant who earns c. the probability of selecting at random from the personnel files a graduate assistant whose hourly 2(40 pts.) Suppose that 37% of Liberals and 57% of Conservatives support building the Dakota Access Pipeline. Now suppose that there are 45 Conservatives and 40 Liberals in one room. a. What is the probability of randomly selecting a Conservative from this room? b. What is the probability of randomly selecting a Conservative who supports building the Dakota Access Pipeline? building the Dakota Access Pipeline? Dakota Access Pipeline? c. What is the probability of randomly selecting one Liberal and one Conservative who both support d. What is the probability of randomly selecting two Conservatives who do not support building the 3. (15 pts.) In an impoverished urban area in the Philippines, individual income is normally distributed with a mean of P4,000 and a standard deviation of 750. What is the income value associated with the top 10% in that area?Explanation / Answer
3.
We have a normal distrution with:
Mean = 4000
Stdev = 750
Income associated with top 10% in that area = ?
Look at Z table for .9 cumulative area , we have Z = 1.28
So, value at 10% top is Mean +Z*Stdev = 4000+1.28*750 = 4960
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.