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A random sample of 100 high-school dropouts in Pittsburgh aged 17 to 19 revealed that 20% of them were unemployed.
a. Place a 95% confidence interval on the percentage of all similar people in that area who are unemployed.
b. The average unemployment rate for the entire work force in Pittsburgh is 7.0%. Is the unemployment rate among high-school dropouts significantly higher than for the entire work force? Justify your answer.
Combined Fuel Economy (using an average of driving conditions) in miles per gallon by whether the car has two- or four-wheel drive. Summarize what you see about the fuel economies of these two types of vehicles.
the employees of cartwright manufacturing are awarded efficiency ratings. the distribution of the ratings approximates
What is the probability that separates the bottom 25 percent from the rest of the distribution.
A car dealership has 8 red, 13 silver and 5 black cars on the lot. Ten cars are chosen randomly to be displayed in front of the dealership. Find the probability that 4 cars are red and the rest are silver.
please describe solution in detail especially the assumptions that must be made ie. what the standard deviation isthere
Suppose you were preparing two-way tables of percentages for the following pairs of variables. How would you run the percentages?
(a) What percent of women have a total cholesterol level less than 217?
Assuming Citicorp's advertisement is correct, what is the probability that fewer than 10% of the people in your sample will be found to have been hospitalized (at least once) during the year? Explain.
Decide what you will do. Is there a need to share your HIV status with the school? With future employers? With patients?
in how many ways can a photographer arrange 6 people in a row from a group of 10 people where the bride and groom are
Do all three prototypes have the same average range? Construct an ANOVA table, and carry out the test. Explain your results.
the unemployment rate of persons with a disability is typically higher than for those with no disability. recent
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