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1. Suppose that at a large state university graduate research assistants are paid by the hour. Data from the HR office show the distribution of hourly wages paid to graduate students across the campus is approximately normal with a mean of 550 pesos per hour and a standard deviation of 80 pesos. Determine the following: a. the percentage of graduate assistants who earn an hourly wage of 670 or more. b. the percentage of graduate assistants who earn an hourly wage between 500 to 650 per hour. c. the probability of selecting at random a graduate assistant who earns between 420 to 500 pesos.

1. Suppose that at a large state university graduate research assistants are paid by the hour. Data from the HR office show the distribution of hourly wages paid to graduate students across the campus is approximately normal with a mean of 550 pesos per hour and a standard deviation of 80 pesos. Determine the following: a. the percentage of graduate assistants who earn an hourly wage of 670 or more. b. the percentage of graduate assistants who earn an hourly wage between 500 to 650 per hour. c. the probability of selecting at random a graduate assistant who earns between 420 to 500 pesos.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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1. Suppose that at a large state university graduate research assistants are paid by the hour. Data from the HR office show the distribution of hourly wages paid to graduate students across the campus is approximately normal with a mean of 550 pesos per hour and a standard deviation of 80 pesos. Determine the following: a. the percentage of graduate assistants who earn an hourly wage of 670 or more. b. the percentage of graduate assistants who earn an hourly wage between 500 to 650 per hour. c. the probability of selecting at random a graduate assistant who earns between 420 to 500 pesos. d. the percentile rank of graduate assistants earning 620 pesos per hour. e. probability of selecting at random two graduate assistants whose hourly wages are 700 or more.
Transcribed Image Text:1. Suppose that at a large state university graduate research assistants are paid by the hour. Data from the HR office show the distribution of hourly wages paid to graduate students across the campus is approximately normal with a mean of 550 pesos per hour and a standard deviation of 80 pesos. Determine the following: a. the percentage of graduate assistants who earn an hourly wage of 670 or more. b. the percentage of graduate assistants who earn an hourly wage between 500 to 650 per hour. c. the probability of selecting at random a graduate assistant who earns between 420 to 500 pesos. d. the percentile rank of graduate assistants earning 620 pesos per hour. e. probability of selecting at random two graduate assistants whose hourly wages are 700 or more.
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