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Assume the probability that an item produced by the certain machine will be defective is 0.1. Determine the probability that the sample of 10 items will contain at most one defective item. Suppose that the quality of successive items is independent.
Statistics and Probability, Statistics
The company financial officer was interested in the average cost of PCs that had been purchased in the past six months. A random sample of the price of 10 computers was taken with the following results (mean = $3,213): $ ...
An electronics store receives a shipment of 37 graphing calculators, including 5 that are defective. Eight calculators are chosen at random to be sent to a local high school. How many selections contain 3 defective?
Estimate the proportion of people in various states that will use the courior services. Suppose the true proportion is 0.03. If 476 are sampled, what is the probability that the sample proportion will be less than 0.04?
The Waiting time for a Pizza order is supposed to be no more than 10 minutes. Some complaints have been received that the orders are in fact taking longer than the claimed 10 minutes. A batch of 50 orders was timed and f ...
A food safety guideline is that the mercury in fish should be below 1 part per million? (ppm). Listed below are the amounts of mercury? (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 9 ...
Industries recently commissioned management consultants to estimate an appropriate rate for investment projects with the same risk as the firm. Unfortunately, part of the report was lost, and you have been asked to calcu ...
Two companies make instruments for bands. Company A's product has a lifespan of 5 years and a standard deviation of 15 months. Compny B's product has a mean lifespan of 5 years and a standard deviation of 3 months. Which ...
A survey of a group of college students was done to find out how students get to school for the school year. 15% of those surveyed were from out of state. Of those that were in-state, 56% used a car as their primary form ...
A normal distribution has a mean equal to 45. What is the standard deviation of this normal distribution if 2.5% of the proportion under the curve lies to the right of x = 52.84? (Round your answer to two decimal plac ...
A student must answer 6 multiple choice questions for a test, but the student did not study well. There are 6 answers per question, but only one is correct. If the student randomly guesses on each questions, what is the ...
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