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Question: Rats are subjected to a drug that might affect aggression. Suppose that for a random sample of rats, measures of aggression are found to be
2. 5, 12, 23, 24, 18, 9, 18, 11, 36, 15.
Compute a .95 confidence for the mean assuming the scores are from a normal distribution.
The probability that the responder is a woman is 0.57. Find the probability that the response is in favor of the death penalty given that the responder is female.
LINEAR PROGRAMMING MODELS
What are various non-parametric tests utilized in business decision making? Give an example of each test with an appropriate business situation.
What are Bernoulli trials? - What is the relationship between Bernoulli trials and the binomial random variable?
In a dice game, one fair die is used. The player wins $10 if he rolls either a 1 or a 6. He loses $5 if he turns up any other face. What is the expected winning for one roll of the die
How is the presence of heteroscedasticity tested and How can heteroscedasticity be corrected and Regress C on Yd for the entire sample and test for heteroscedasticity.
A cohort study was conducted to examine cigarette smoking and the risk of oral cancer. The investigators selected exposed and unexposed subjects so that they had the exactly same distribution of race. This method to address confounding by race is ..
Use these data to create a data-based CDF for the distribution of weights for lab animals. Estimate the probability that an animal's weight will be less than 9.5 grams.
For 26 babies born in April the mean and standard deviation were 31.84 and 6.21 weeks, while for 44 October babies the mean and standard deviation of crawling ages were 33.35 and 7.29 weeks. Is this difference significant?
Pairwise relationships among variables in the CSDATA data set. Using a statistical package, generate the pairwise correlations and scatterplots discussed previously. Comment on any unusual patterns or observations.
U1, U2,... are independent identically distributed uniform random variables with parameters 0 and 1. (a) Let Xi = - ln Ui. What is P[Xi > x]?
Serum cholesterol levels were taken from a population of 10,000 college students. The results were normally distributed. Males had a mean of 195 and a standard deviation of 10. Females had a mean of 185 and a standard deviation of 12.
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