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Relationship of PUVA treatment to incidence of melanomaObserved Expected<250 treatments 5 3.7>250 treatments 6 1.1
Suppose we want to compare the observed and expected number of events among the group <250 treatments. Perform an appropriate significance test, report a two-tailed p-value and then provide a 95% CI for the expected number of events in the group with >250 treatments.
What is the computed z-value for testing the null hypothesis that the proportion of successes in Population 1 exceeds the proportion of successes in Population
At the level of significance, is there evidence that the population mean force is greater than 1500 pounds?
How many participants would be required to ensure that a 95% confidence interval for the mean difference in the number of drinks is within two drinks of the true mean? Assumed that the standard deviation of the difference in the mean number of dri..
Identify a key variable that you want to predict, and specify at least two variables that you think would be key in making that prediction.
How many commuters must be randomly selected to estimate the mean driving times of Chicago commuters? If we want 99% confidence that the sample mean is within 2 minutes of the population mean, and the population standard deviation is known to be 1..
Suppose n = 1000 persons are to be sampled from this population and the sample proportion of married persons (ρ-hat) is to be calculated. What is the mean of the sampling distribution of ρ-hat?
Share 1 real-world binomial distribution situation and 1 real-world Poisson distribution situation. Be sure to explain why each example is defined as binomial or Poisson.
Determine 80% confidence interval for average weights of Allen's hummingbirds in study regions. Determine the margin of error?
What are the 3 measures of dispersion/variation in a dataset? How do you calculate each of these 3 measures?
What is the aim of multiple linear regression? Discriminate analysis? Canonical correlation? Multivariate analysis of variance?
What sample size should be chosen so that there is 0.95 probability of estimating the mean monthly income in $150 or less?
In considering doing a logistic regression using the Enter method, it was suggested that I may want to consider doing a sequential LSR or stepwise logistic regression instead.
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