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Think about the state of the United States in 1936. Explain why a sample chosen from magazine subscription lists, automobile registration lists, phone books, and club membership lists was not representative of the population of the United States at that time.
1. what is the r value for the relationship between hamstring strength index 60degs and the shuttle run test? is this r
A lottery has one $2000 prize, two $1000 prizes, and ten $500 prizes. Two thousand tickets are sold at $5 each. Find the expectation if a person buys two tickets.
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height
A small independent physicians practice has three doctors. Dr. Sarabia sees 39% of the patients, Dr. Tran sees 27% and Dr.jackson sees the rest.
a new muscle relaxant is available. researchers from the firm developing the relaxant have done studies that indicate
the time in hours for a worker to repair an electrical instrument is a normally distributed random variable with a mean
In a sample batch of 46 mechanical pencils it is assumed that 18 are defective. If 5 mechanical pencils are randomly selected, what is the probability that none of them are defective?
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
Some of the methods in this section are approximations rather than exact probability results. We have given rules of thumb for safe use of these approximations.
the first internet bank wants to encourage its customers to do all their banking online. it offers higher interest to
Use a 0.01 significance level to test the claim that most people believe that the Loch Ness monster exists. How is the conclusion affected by the fact that Internet users who saw the question could decide whether to respond.
A random sample of eight adults aged 30 years were asked how much they spent on medical costs in the year 2011. The following data were measured.
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