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A board game enthusiast wonders whether the die provided in her board game is fair. She rolls the die 25 times and observes "6" only one time. State the relevant statistical model and hypotheses. Calculate the p-value and provide a conclusion. If she was only going to roll the die 25 times, what might she have done better?
Suppose you were to cut up the directory and pull out one listing at random to contact.
Formulate an 84% interval estimate for the true proportion of employees within one year of retirement in the entire corporation.
You will be graded on accuracy, completeness (addressing each point above), and effectiveness (utility, ease of reading).
Elucidate this data use an appropriate statistical test to explain whether the population mean TV "on" time has declined in the past decade.
The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute.
What is the probability that Dave wins the sprint and what is the probability that Dave wins and John places second, what is the probability that Ed finishes last
In all, 53 say "good." Does the poll give reason to conclude that more than half of all seniors think their job prospects are good? The hypotheses for a test to answer this question are?
When we carry out a chi-square test of independence, the expected frequencies are based upon the Null hypothesis - true or false.
A survey researcher compares 4 religious groups on their attitudes toward education. 1200 subjects receive the survey and 823 respond. There are 10 items; the likert scale is 1-5. A high positive score indicates a more positive attitude.
In an analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is:
Assume the least squares equation is Y' = 10 + 20X. What does the value of 10 in the equation indicate?
The analysis needs to be re-run adding the error into the regression sum of squares.
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