A student is about to take a 20- item multiple choice exam (with 4 choices) without studying, and plans to guess the answer for every number. What is the probability that the student will score 18 or above if the test had 5 choices? O 5.27x10^-8 O 3.27x10^-11 7.27x10^-5 O 9.27x10^-3
A student is about to take a 20- item multiple choice exam (with 4 choices) without studying, and plans to guess the answer for every number. What is the probability that the student will score 18 or above if the test had 5 choices? O 5.27x10^-8 O 3.27x10^-11 7.27x10^-5 O 9.27x10^-3
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...
Related questions
Question
show solution
Transcribed Image Text:A student is about to take a 20-
item multiple choice exam (with 4 choices) without studying, and plans to guess the
answer for every number. What is the probability that the student will score 18 or
above if the test had 5 choices?
O 5.27x10^-8
O 3.27x10^-11
O 7.27x10^-5
O 9.27x10^-3
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 3 images
Recommended textbooks for you
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON