An empirical probability distribution based on weekly study times for a sample of 40 students is provided to the right. Suppose one of those students was chosen randomly. In parts (a) through (d) below, using your distribution, find the probability that the study time in the past week for the student selected would have been in each of the following ranges. Class Limits Frequency Relative f Frequency 10-19 0.150 .... 20-29 11 0.275 (a) 30-39 hours 30-39 1 0.025 (Type an integer or a decimal.) 40-49 15 0.375 50-59 0.050 (b) 40-59 hours 60-69 0.025 (Type an integer or a decimal.) 70-79 4. 0.100 Total: n= 40 (c) fewer than 30 hours (Type an integer or a decimal.) (d) at least 50 hours (Type an integer or a decimal.)
An empirical probability distribution based on weekly study times for a sample of 40 students is provided to the right. Suppose one of those students was chosen randomly. In parts (a) through (d) below, using your distribution, find the probability that the study time in the past week for the student selected would have been in each of the following ranges. Class Limits Frequency Relative f Frequency 10-19 0.150 .... 20-29 11 0.275 (a) 30-39 hours 30-39 1 0.025 (Type an integer or a decimal.) 40-49 15 0.375 50-59 0.050 (b) 40-59 hours 60-69 0.025 (Type an integer or a decimal.) 70-79 4. 0.100 Total: n= 40 (c) fewer than 30 hours (Type an integer or a decimal.) (d) at least 50 hours (Type an integer or a decimal.)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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