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
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 26SGR
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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