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When a machine is improperly adjusted it has probability 0.15 of producing a defective item. Each day the machine is run until three defective items are produced. If this occurs, the machine is stopped and checked for adjustment. What is the probability that an improperly adjusted machine will produce five or more items before it is stopped? What is the average number of items an improperly adjusted machine will produce before being stopped?
Use a 95% confidence interval for multiple comparisons. Show your calculation by hand between Monday and Tuesday. Match your answer with Minitab output. Attach Minitab output.
For what proportion of patients will drug be effective for between 2 and 2.25 hours?
Evaluate the difference in the mean ratings and find the standard deviation of the difference in the ratings, what is the chance both children are boys?
Determine regression line for predicting January temperature from latitude.
What is the rejection point at α = .10 and indicate if you would accept or reject H o ?
Calculate a 90% confidence interval for the percentage of homes in the US that had guns at the time of survey.
If the true mean for Saturday sales is now $4500, what is the probability of accepting the (false) null hypothesis.
What is the probability that Sara will die in her 60 th year? Using this probability and the $50,000 death benefit, what is the expected loss to Big Rock Insurance?
Public transportation and the automobile are 2 methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
At the .05 level of significance, is there convincing evidence that the number of absences per employee has increased?
Tree diagram for a probability experiment - Identify the sample space of the probability experiment and determine the number of outcomes in the event. Show a tree diagram if it is appropriate.
Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15.
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