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A quality control analyst randomly selects 3 different car ignition systems from a manufacturing process that has just producted 200 systems, including 5 that are defective. a- does this selection process involve independent events?; b- what is the probability that all 3 ignition systems are good;c- use 5% guideline for treating the events as independent, and find the probability that all 3 ignition systems are good.d- which is better: the answer from part (b) or the answer from part (c)? why?
Let x = number of the ball obtained on any selection. Then the probability distribution for x is given by:
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
The New York Times recently reported that 60% of college entrants into elite public and private colleges in the U.S. have parents that earn over $150,000/yr.
The Greenberg public hearing meeting turned stormy. Citizens from four suburbs were gathered at city hall to try to get the city's federal funds for their own suburbs. The government recently awarded $750,000 to the city for road improvements. The..
In an online survey of 4001 respondents, 8% were classified as productivity enhancers who are comfortable with technology and use the internet for its practical value. Suppose you select a sample of 400 students at your school, and the population ..
Can we conclude at a 98% level of confidence, that the mean number of hours per day using the computer by students at IUP is the same as the typical student's usage?
Utilizing jacobian method finding the probability density function. Utilizing either the CDF method or Jacobian method illustrate the probability density function of Y is given.
Nationwide, the average waiting time until electric utility customer service representative answers a call is 300 seconds per call. The Gigantic Kilowatt Energy Company took a sample of 35 calls and found that, on the average
The odds in favor of an event are the number of successes divided by the number of failures. The probability of this event occurring is the number of successes divided by the sum of the number of successes and the number of failures.
A mortar shell is s feet above the ground after t seconds, where s=f(t)= -16t + 510t +63. Find the height of the shell 15 seconds after it is fired.
A party, and 35% stay home. Seventeen people are randomly selected. Can the probability that exactly 4 of them stay home be computed using a binomial model?
Estimate with 90% confidence the difference in the level of satisfaction with service between the two branches.
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