The numbers of hours worked (per week) by 400 statistics students are shown below. Number of Hours Frequency 0 ≤ x < 20 40 20 ≤ x < 40 70 40 ≤ x < 60 210 60 ≤ x < 80 80 The relative frequency of students working less than 20 hours is _____. a. 0.90 b. 0.10 c. 40 d. 110 2) The numbers of hours worked (per week) by 400 statistics students are shown below. Number of Hours Frequency 0 ≤ x < 20 10 20 ≤ x < 40 90 40 ≤ x < 60 180 60 ≤ x < 80 120 The cumulative relative frequency for the class of 40 ≤ x < 60 is _____. a. 280 b. 0.30 c. 0.50 d. 0.70
The numbers of hours worked (per week) by 400 statistics students are shown below. Number of Hours Frequency 0 ≤ x < 20 40 20 ≤ x < 40 70 40 ≤ x < 60 210 60 ≤ x < 80 80 The relative frequency of students working less than 20 hours is _____. a. 0.90 b. 0.10 c. 40 d. 110 2) The numbers of hours worked (per week) by 400 statistics students are shown below. Number of Hours Frequency 0 ≤ x < 20 10 20 ≤ x < 40 90 40 ≤ x < 60 180 60 ≤ x < 80 120 The cumulative relative frequency for the class of 40 ≤ x < 60 is _____. a. 280 b. 0.30 c. 0.50 d. 0.70
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
The numbers of hours worked (per week) by 400 statistics students are shown below.
The relative frequency of students working less than 20 hours is _____.
| Number of Hours | Frequency | |||
| 0 ≤ x < 20 | 40 | |||
| 20 ≤ x < 40 | 70 | |||
| 40 ≤ x < 60 | 210 | |||
| 60 ≤ x < 80 | 80 |
The relative frequency of students working less than 20 hours is _____.
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2)
The numbers of hours worked (per week) by 400 statistics students are shown below.
The cumulative relative frequency for the class of 40 ≤ x < 60 is _____.
| Number of Hours | Frequency | |||
| 0 ≤ x < 20 | 10 | |||
| 20 ≤ x < 40 | 90 | |||
| 40 ≤ x < 60 | 180 | |||
| 60 ≤ x < 80 | 120 |
The cumulative relative frequency for the class of 40 ≤ x < 60 is _____.
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