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A company purchases shipments of machine components and uses this acceptance sampling plan: Randomly select and test 20 components and accept the whole batch if there are fewer than 3 defectives. If a particular shipment of thousands of components actually has a 8% rate of defects, what is the probability that this whole shipment will be accepted? Round to three decimal places.
What is the expected number of audits for the 6 randomly selected individuals? What is the standard deviation for the number of audits for the 6 randomly selected individuals?
What is the probability that it will crash at least two times in a given semester? What is the probability that it will not crash at all in a given semester?
While in July the mean high temperature is 74oF and the standard deviation is 8oF. In which month is it more unusual to have a day with a high temperature of 55oF?
The random variable x is known to be uniformly distributed between 70 and 90. The probability of x having a value between 80 to 95 is
Hypothesis Testing: We wish to test the claim that the mean body mass index (BMI) of men is equal to the mean BMI of women. Use the data to the right to test this claim.
instead of rolling a die 100 times use statcrunch to simulate 100 rolls of a die. use statcrunch to create a random
One approach would be to contact every psychology graduate student you know and ask them to fill out a questionnaire about it.
Students given exam with 300 multiple questions, distribution was normal and mean 195 with a standard deviation of 30. What were the scores of the students who are within one standard deviation of the mean?
Compare these with the percentages specified by Tchebysheff's Theorem.
create a dataset of at least 50 observations from your workplace or personal experiences. calculate the descriptive
What is the purpose of the F test in a multiple regression? What is a qualitative independent variable? How would we/what technique would we use to include a qualitative independent variable in a regression model.
three cards are randomly selected without replacement from a standard deck of 52 playing cards. compute the conditional
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