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indicated probability of time spent each weeknight doing homework. 45. A randomly selected high school student spends at least 40 minutes 46. A randomly selected high school student spends at most 60 minutes 47. A randomly selected high school student spends between 45 minutes and 65 minutes

indicated probability of time spent each weeknight doing homework. 45. A randomly selected high school student spends at least 40 minutes 46. A randomly selected high school student spends at most 60 minutes 47. A randomly selected high school student spends between 45 minutes and 65 minutes

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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45,46,47
A normal distribution has a mean of 256 and a standard deviation of 12.5. Find the probability that a randomly selected value, x, from the distribution is in the given interval. 41. P(x ≤240) 39. P(x ≥263) 40. P(250≤x≤260) A normal distribution has a mean of 183 and a standard deviation of 9.4. Find the probability that a randomly selected value, x, from the distribution is in the given interval. 42. P(185≤x≤190) 43. P(x≤205) 44. P(x ≥189) The amount of time high school students spend each weeknight doing homework is normally distributed with a mean of 52.5 minutes and a standard deviation of 5.1 minutes. Find indicated probability of time spent each weeknight doing homework. 45. A randomly selected high school student spends at least 40 minutes 46. A randomly selected high school student spends at most 60 minutes 47. A randomly selected high school student spends between 45 minutes and 65 minutes
Transcribed Image Text:A normal distribution has a mean of 256 and a standard deviation of 12.5. Find the probability that a randomly selected value, x, from the distribution is in the given interval. 41. P(x ≤240) 39. P(x ≥263) 40. P(250≤x≤260) A normal distribution has a mean of 183 and a standard deviation of 9.4. Find the probability that a randomly selected value, x, from the distribution is in the given interval. 42. P(185≤x≤190) 43. P(x≤205) 44. P(x ≥189) The amount of time high school students spend each weeknight doing homework is normally distributed with a mean of 52.5 minutes and a standard deviation of 5.1 minutes. Find indicated probability of time spent each weeknight doing homework. 45. A randomly selected high school student spends at least 40 minutes 46. A randomly selected high school student spends at most 60 minutes 47. A randomly selected high school student spends between 45 minutes and 65 minutes
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