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
Related questions
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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