The amount of coffee that people drink per day is normally distributed with a mean of 16 ounces and a standard deviation of 5 ounces. 17 randomly selected people are surveyed. Round all answers to 4 decimal places where possible. What is the probability that one randomly selected person drinks between 15 and 17 ounces of coffee per day?  Find the IQR for the average of 17 coffee drinkers. Q1 =  ___________ounces Q3 =  ___________ounces IQR:  ___________ounces

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 11PPS
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The amount of coffee that people drink per day is normally distributed with a mean of 16 ounces and a standard deviation of 5 ounces. 17 randomly selected people are surveyed. Round all answers to 4 decimal places where possible.

  1. What is the probability that one randomly selected person drinks between 15 and 17 ounces of coffee per day? 
  2. Find the IQR for the average of 17 coffee drinkers.
    Q1 =  ___________ounces
    Q3 =  ___________ounces
    IQR:  ___________ounces
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