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3 methods, A, B, and C are available for teaching a certain industrial skill. Only one of these methods is used in teaching a particular worker. The failure rate is 20% for A, 10% for B, and 30% for C. However, B is a more expensive and hence is used only 10% of the time, while C is very cheap and is used 50% of the time. Suppose a worker was selected at random and failed to learn the skill correctly, what is the probability that the worker was taught using method A?
For each, draw the histogram of the sampling distribution of bar(y). Which sampling distribution has the smaller variance, and why?
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
A couple both carry a recessive gene for albinism, meaning the probability of any child being albino is ¼. The couple plans to have 4 children. What is the probability that two of their four children will be albino? Calculate the expected mean and ex..
As a manager, what are some benefits of applying probability concepts to solve business-related problems? Would business decisions suffer without probability concepts? Explain.
An order for 5 pizzas has just been place. What is the minimum number of pizzas that must be made in order to be at least 99% sure that there will be 5 that are edible?
For a sample with standard deviation of 10, a score of X = 44 corresponds to z-score of 0.50. Based on this info, determine the sample mean?
A IRS auditor randomly selects 3 tax returns from 48 returns of which 9 contain errors. What is the probability that she selects none of those containing errors? Round to four decimal places.
A building developer has the opportunity to purchase several acres of land that is divided up into several lots for building single-family homes.
Find the probability that the mean age of those doctors is less than 53.00 years. Assume that the variable is normally distributed.
How would you communicate this information to the Vice-President of Human Resources in non-statistical language.
The daily revenue totals for the next 30 days will be monitored. What is the probability what the mean daily revenue for the next 30 days will exceed $7500?
Sample data in a goodness-of-fit test are compared with __________. A. a predetermined or historical standard for the variable being studied
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