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Problem: A total of 3000 workers at a particular industry were asked whether they had a history of hypertension or not at the beginning of their employment. Of the 3000, 60% were males, 40% were 40-50 years of age and 60% were above the age of 50 years. Of the 3000 workers, 600 reported a history of hypertension. Of the 600 cases of hypertension, 30% were males and 70% were above 50 years of age. Calculate the following:
Prevalence of hypertension in male workers?
1. What is a pressure-compensated flow control valve? 2. What is a servo valve? How does it work?
The Lucky Lovers discount at the Quiet Nook averages $5.83 with a standard deviation of $8.62. Just up the street, the Wise Fool restaurant has a competing.
Among 134 randomly selected students, 9.3% refused to respond on a survey on cheating while among 154 male college students, 14.6% refused to respond to the same survey. Determine test statistic, critical values, p-value, and conclusion.
Assume that the sample proportion calculated calculated from the above data is the population proportion (assume alpha=0.05).
Bryan money to drive to Madison to buy gas for each of his cars since he has to drive there twice a week anyway?
Liar, liar! Sometimes police use a lie detector (also known as a polygraph) to help determine whether a suspect is telling the truth.
Hoops. A basketball player with a poor foul-shot record practices intensively during the off-season. He tells the coach that he has raised his proficiency.
What is the level L so there is only a 13% chance that the sample mean time to failure falls above L?"
Develop a pie chart to summarize these contributions. Develop a bar chart to summarize these contributions and why is it appropriate to construct a bar chart for these data instead of a histogram?
suppose for each student in a large statistics class you record how far shehe sits from the teacher during a
What is the best estimate of the proportion of adults who believe that immediate government action is? required?
A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information
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