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In a certain year, 10,923 professional train pushers are diagnosed with carpal tunnel. The top cities for such diagnoses are Tokyo with 2,147, Osaka with 2,768, and Kyoto with 1,002. If a professional train pusher recently diagnosed with carpal tunnel is randomly selected, what is the probability that they are from somewhere other than Tokyo, Kyoto or Osaka?
Answer in decimal form. Round to 3 decimal places as needed.
Joe thinks that no more than 20% of students in his Statistics class will get an A in the final examination. To prove his claim, he takes a random sample of 35 students and finds to his surprise that 30% of students got an A.
A firm has 550 employees; 380 of them have had at least some college education, and 412 of the employees underwent a vocational training program.
Create a 98 percent confidence interval for the population mean.
question what is a type i error? explain how the cumulative type i error affects your decision making. how are the two
Suppose you draw two cards from a standard deck of 52 cards without replacing the first one before drawing the second. Find the probability that the first card is a king and that the second card is an ace?
The article "The LoadLife Relationship for M50 Bearings with Silicon Nitride Ceramic Balls" (Lubrication Engr., 1984: 153-159) reports the accompanying data on bearing load life (million revs.) for bearings tested at a 6.45 kN load.
As part of study of the development of the thymus gland, researchers weighed the glands of five chick embryos after 14 days of incubation. Calculate the standard error of the mean.
Hospital stay for patients undergoing radical prostatectomies in a sample of 32 states. The data are listed in the accompanying table.
a student believes that no more than 20 of the students who finish a statistics course get an a. a random sample of 100
A sensitive measuring device is calibrated so that errors in the measurements it provides are normally distributed with mean 0 and variance 1.00.- Find the probability that a given error will be between -2 and 2.
1. the distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 7.8
Find the sample proportion and the large-sample margin of error for 95% confidence. Explain in simple terms the meaning of the 95%.
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