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Translate the following arguments into symbolic form and use the first eight rules of inference to derive the conclusion of each. Use the letters in the order in which they are listed.
If half the nation suffers from depression, then if either the insurance companies have their way or the psychiatrists have their way, then everyone will be taking antidepressant drugs. If either half the nation suffers from depression or sufferers want a real cure, then it is not the case that everyone will be taking antidepressant drugs. Half the nation suffers from depression. Therefore, it is not the case that either the insurance companies or the psychiatrists will have their way. (H, I, P, E,W)
If the age at which babies develop the ability to walk can be described by a Normal model, find the parameters (mean and standard deviation).
Is it possible that a sample correlation of 0.51 between two variables will not indicate that the two variables are really correlated, while a sample correlation of 0.04 between another pair of variables will be statistically significant? Explain.
Does this data provide evidence at the .05 significance level that there is a difference in the proportion of humorous ads in British versus American trade magazines? Please show work.
What is the population parameter of interest in this situation?- Calculate the standard error of the sample proportion.
a project was planned using pert with three times estimates. the expected completion time of the project was determined
assume that a procedure yields a binomial distribution with a trial repeated ntimes. use a binomial probabilities table
Do these data provide evidence that metal-tagged penguins have a later mean arrival time?
If the (x, z) points are plotted in a graph, can this graph be used to determine whether the sample comes from a normally distributed population? Explain.
If people on your floor of dorm bought 425 of those tickets, determine the probability that someone on your floor will hold winning ticket?
If the acceptance rate is only 2% or less, the campaign won't be worth the expense. Given the confidence interval you found, what would you say?
The standard deviation is estimated to be 0.279. Use the 99% level of confidence.
When a result is not extreme enough to reject the null hypothesis, explain why it is wrong to conclude that your result supports the null hypothesis.
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