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One state lottery has 225 prizes of$1.00, 100 prizes of $5.00, 40 prizes of $25.00, 14 prizes of $100, 4 prizes of $350, & 1 prize of $1000. Assume that 15,000 lottery tickets are issued and sold for $1.00. What is the lottery's expected profit per ticket?
How large would an SRS of American adults need to be in order for it to be safe to assume that the sampling distribution of X is approximately Normal?
To develop 3-month and 2-month moving average for the time series.The following data represents demand for company ABC's products for the last 10 months.
If X and Y are two independent Poisson random variables, then show that the conditional distribution of X given X+Y is binomial.
In a random sample of 120 households, what is the probability that greater than 20 households, but, less than 35 households receive a retirement income?
A study suggested that personality type is related to heart disease. Specifically, type A people,who are competitive, driven, pressured, and impatient, are more prone to heart disease.
Consider a random sample of size n from a normal distribution, Xi ~ N(m,9). a) Find the CRLB for the variances of unbiased estimators of m. b) Is the MLE, m(hat) = X(bar), a UMVUE of m?
Test the hypothesis that the dogs did significantly better than what would be expected with random guessing.
Complete the table and answer the following questions. Use the .05 significance level.
To find the probabilities values of standard normal variable
Their probabilities for success on a single play are p for A and q for B, and successive plays are independent. Determine the probablity that A wins the contest given A plays first.
Can you give a general rule as to what happens with confidence intervals as a function of sample sizes and confidence levels? What are the trade-offs?
If the Pearson Correlation is 0.18, what do we get, what is the value called, and what does it tell us?
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