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The average teacher's salary in Connecticut (ranked first among states) is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. What is the probability that a randomly selected teacher makes less than $52,000 per year? What is the probability that the next teacher's salary is less than $56,000?

The average teacher's salary in Connecticut (ranked first among states) is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. What is the probability that a randomly selected teacher makes less than $52,000 per year? What is the probability that the next teacher's salary is less than $56,000?

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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The average teacher's salary in Connecticut (ranked first among states) is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. What is the probability that a randomly selected teacher makes less than $52,000 per year? The mean weight of 15-year-old males is 142 pounds, and the standard deviation is 12.3 pounds. Find the probability that 15-year old male will have a weight greater than 144.5 pounds. Assume the variable is normally distributed. Based on your answer, would you consider the child overweight? What is the probability that the next teacher's salary is less than $56,000? The average number of calories in a 1.5-ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with o = 10. Find the probability that a randomly selected chocolate bar will have a. Between 200 and 220 calories b. Less than 200 calories
Transcribed Image Text:The average teacher's salary in Connecticut (ranked first among states) is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. What is the probability that a randomly selected teacher makes less than $52,000 per year? The mean weight of 15-year-old males is 142 pounds, and the standard deviation is 12.3 pounds. Find the probability that 15-year old male will have a weight greater than 144.5 pounds. Assume the variable is normally distributed. Based on your answer, would you consider the child overweight? What is the probability that the next teacher's salary is less than $56,000? The average number of calories in a 1.5-ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with o = 10. Find the probability that a randomly selected chocolate bar will have a. Between 200 and 220 calories b. Less than 200 calories
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