Job Shadowing Pros

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Question 1 The 9-month salaries at a daycare center are normally distributed with a mean of $19,000 and a standard deviation of $4,000. a. | What is the probability that an employee will have a salary between $12,520 and $13,480? | b. | What is the probability that an employee will have a salary more than $11,880? | c. | What is the probability that an employee will have a salary less than $28,440? | ANS: a. | 0.0312 | b. | 0.9625 | c. | 0.9909 | Question 2 The contents of soft drink bottles are normally distributed with a mean of twelve ounces and a standard deviation of one ounce. a. | What is the probability that a randomly selected bottle will contain more than ten ounces of soft drink? | b. | What is the probability that a randomly selected bottle will contain between 9.5 and 11 ounces? | c. | What percentage of the bottles will contain less than 10.5 ounces of soft drink? | ANS: a. | 0.9772 | b. | 0.1525 | c. | 6.68% | Question 3 The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months. a. | What is the probability that a randomly selected watch will be in working condition for more than five years? | b. | The company has a three-year warranty period on their watches. What percentage of their watches will be in operating condition after the warranty period? | c. | What is the minimum and the maximum life expectancy of the middle 95% of the watches? | d. | Ninety-five percent of the watches will have a life expectancy of at least how many months? | ANS: a. | 0.0668 | b. | 93.32% | c. | Min  32.32 months Max  63.68 months | d. | 34.84 months | Question 4 An automotive repair shop has determined that the average service time on an automobile is 2 hours with a

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