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An unemployment counselor found that in a sample of 100 unemployed workers, 65% were not interested in returning to work. Find the 95% confidence interval of the true proportion of workers who do not wish to return to work.
The annual income among male and female nurses differs significantly. There is a significant difference in the length of hospitalization among patients admitted from nursing homes, rehabilitation facilities and home
Adult US women are known to have cholesterol levels that are N(189 mg/dL, 25 mg/dL). What % of US women would you expect to have cholesterol levels below 135?
Suppose that the actual mean value in the population is , what is the probability of a Type II error (incorrectly accepting a false null hypothesis)?
If a card is drawn at random from a standard 52-card deck, what is the probability that the card drawn is one of the following?
What is the probability that the mean starting salary is between $31,000 and $33,000 - Graduates from a graphic arts course at a community college have a mean starting salary
In a sample of 32 DVD players, what is the probability the average life will be less than 8 years (96 months)? (please round your answer to 4 decimal places).
To estimate the size of the bear population on the Keweenaw Peninsula, conservationists captured, tagged, and released 50 bears. One year later a random sample of 100 bears included only 2 tagged bears.
To see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made. see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made.
Is there evidence of a significant difference in the proportion who get their news primarily from newspapers between those 36 to 50 years old and those above 50 years old? (use α = 0.05)
In this context, describe the Type I error possible. How might such an error impact ABI Insurance? In this context, describe the Type II error possible. How might such an error impact ABI Insurance?
The sample mean was $22,098 and the standard deviation was $6050. Is there evidence at the 1% significance level that the cost of attendance has increased?
LPP using the graphical method. Solveout the following linear programming problem utilizing the corner point method.
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