Suppose that only 20% of all drivers come to a complete stop atan intersection having flashing red lights in all directions when noother cars are visible. What is the probability that, of 20randomly chosen drivers coming to an intersection under theseconditions,a) At most 7 will come to a complete stop?b) Exactly 6 will come to a complete stop?At least 4 will come to a complete stop?1.c)d)How many of the next 20 drivers do you expect to come to acomplete stop?2. An examination consists of 10 multi-choice questions, in each ofwhich a candidate has to deduce which one of five suggested answersis correct. A completely unprepared student may be assumed toguess each answer completely randomly. What is the probability thatthis student gets 8 or more questions correct?

(1a) Obtain the probability at most 7 will come to a complete shop. The probability that at most 7…

Suppose that only 20% of all drivers come to a complete stop at an intersection having flashing red lights in all directions when no other cars are visible. What is the probability that, of 20 randomly chosen drivers coming to an intersection under these conditions, a) At most 7 will come to a complete stop? b) Exactly 6 will come to a complete stop? c) At least 4 will come to a complete stop? d) How many of the next 20 drivers do you expect to come to a complete stop?

Suppose that only 20% of all drivers come to a complete stop at an intersection having flashing red lights in all directions when no other cars are visible. What is the probability that, of 20 randomly chosen drivers coming to an intersection under these conditions, a) At most 7 will come to a complete stop? b) Exactly 6 will come to a complete stop? c) At least 4 will come to a complete stop? d) How many of the next 20 drivers do you expect to come to a complete stop?

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

100%

Suppose that only 20% of all drivers come to a complete stop at
an intersection having flashing red lights in all directions when no
other cars are visible. What is the probability that, of 20
randomly chosen drivers coming to an intersection under these
conditions,
a) At most 7 will come to a complete stop?
b) Exactly 6 will come to a complete stop?
At least 4 will come to a complete stop?
1.
c)
d)
How many of the next 20 drivers do you expect to come to a
complete stop?
2. An examination consists of 10 multi-choice questions, in each of
which a candidate has to deduce which one of five suggested answers
is correct. A completely unprepared student may be assumed to
guess each answer completely randomly. What is the probability that
this student gets 8 or more questions correct?

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