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and 45, and (d) 55 or more of the bolts will be defective. -72 Find the probability of getting more than 25 sevens in 100 tosses of a pair of fair dice.

and 45, and (d) 55 or more of the bolts will be defective. -72 Find the probability of getting more than 25 sevens in 100 tosses of a pair of fair dice.

A First Course in Probability (10th Edition)
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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probability that on a true-false examination a student can guess correctly the answers to (a) 12 or more out of 20 questions and (b) 24 or more out of 40 questions. 71 Ten percent of the bolts that a machine produces are defective. Find the probability that in a random sample of 400 bolts produced by this machine, (a) at most 30, (b) between 30 and 50, (c) between 35 and 45, and (d) 55 or more of the bolts will be defective. -72 Find the probability of getting more than 25 sevens in 100 tosses of a pair of fair dice.
Transcribed Image Text:probability that on a true-false examination a student can guess correctly the answers to (a) 12 or more out of 20 questions and (b) 24 or more out of 40 questions. 71 Ten percent of the bolts that a machine produces are defective. Find the probability that in a random sample of 400 bolts produced by this machine, (a) at most 30, (b) between 30 and 50, (c) between 35 and 45, and (d) 55 or more of the bolts will be defective. -72 Find the probability of getting more than 25 sevens in 100 tosses of a pair of fair dice.
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