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Assuming that workers’ salaries in your company are uniformly distributed between $30,000 and $70,000 per

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1.  Assuming that workers’ salaries in your company are uniformly distributed between $30,000 and $70,000 per

year, find the probability that a randomly chosen worker earns an annual salary between $35,000 and$40,000.

2. Your company’s new series “Avocado Comedy Hour” has been a complete flop, with viewership continuously declining at a rate of 31% per month. Use a suitable density function to calculate the probability that a randomly chosen viewer will be lost sometime in the next four months. (Round your answer to four decimal places.)  

3. This exercise uses the normal probability density function and requires the use of either technology or a table of values of the standard normal distribution. 

Repeated measurements of a student’s IQ yield a mean of 125, with a standard deviation of 5. What is the probability that the student has an IQ between 122 and 128? (Round your answer to four decimal places.) 

 
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