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The U.S. Bureau of Labor Statistics releases figures on the number of full-time wage and salary workers with flexible schedules. The numbers of full-time wage and salary workers in each age category are almost uniformly distributed by age, with ages ranging from 18 to 65 years.
a) If a worker with a flexible schedule is randomly drawn from the U.S. workforce, what is the probability that he or she will be between 25 and 50 years of age?
b) What is the mean value for this distribution?
c) What is the value f (x) for the distribution?
What is the probability that the mean breaking strength of the 3 untreated specimens is at least 25 pounds greater than the mean strength of the 3 treated specimens?
Considering all of the day to day activities you are engaged in at work and in your personal lives, write a 200 (or more) word paper that describes at least three (3) different statistical usages that you see regularly.
a large manufacturing firm tests job applicants who recently graduated from college. the test scores are normally
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The quality control manager at a lightbulb factory needs to determine whether the mean life of a large shipment of lightbulbs is equal to the specified value of 375 hours.
Using a level of significance of .10, is there evidence that the dual degree students are receiving lower grades? Fully explain your answer.
a two-factor study with two levels of factor a and three levels of factor b uses a separate sample of n 5 participants
Students that studied for more than one hour received a c+ or above on the final. Use a .05 significance level to test the professor's claim.
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at least 70%.
in an analysis in investigating the usefulness of pennies the cents portion of 100 randomly selected credit card
Construct a 95 percent confidence interval for the true mean.
What is your null hypothesis? What is your alternative hypothesis? What your decision about the null hypothesis?
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