Question 1 In a survey carried on in a district, it is found that 20% of the students go to school by car. a. If 10 students are chosen at random from the district, find the probability that half the students go to school by car. a) 0.002642 b) 0.1057 c) 0.02642 b. If there are 6 000 students in the district, calculate the mean and standard deviation of the number of students who go to school by car. a) 1100, 30.98 b) 1200, 30.98 c) 1200, 40.98

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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Question 1
In a survey carried on in a district, it is found that 20% of the students go to
school by car.
a. If 10 students are chosen at random from the district, find the probability
that half the students go to school by car.
a) 0.002642
b) 0.1057
c) 0.02642
b. If there are 6 000 students in the district, calculate the mean and
standard deviation of the number of students who go to school by car.
a) 1100, 30.98 b) 1200, 30.98 c) 1200, 40.98
Transcribed Image Text:Question 1 In a survey carried on in a district, it is found that 20% of the students go to school by car. a. If 10 students are chosen at random from the district, find the probability that half the students go to school by car. a) 0.002642 b) 0.1057 c) 0.02642 b. If there are 6 000 students in the district, calculate the mean and standard deviation of the number of students who go to school by car. a) 1100, 30.98 b) 1200, 30.98 c) 1200, 40.98
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