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Question: Define L to be the lowest of the five numbers drawn in the Cash 5 lottery game in Example. Describe the shape of the sampling distribution of L, and explain how you know.
Example: Winning the Lottery by Betting on Birthdays In the Pennsylvania Cash 5 lottery game, players select five numbers from the integers 1 to 39, and the grand prize is won by anyone who selects the same five numbers as the ones randomly drawn by the lottery officials. Suppose that in such a game, someone bets numbers corresponding to the days of the month on which five family members were born, which is anecdotally a common strategy.
In the bank customer waiting time case, a bank manager had developed a new system to reduce the time customers spend waiting to be served by tellers during peak business hours.
What are the differences between correlation and regression? What are the common pitfalls of using regression modeling?
Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately what percent of the observations are within two standard deviations of the mean?
You are testing the null hypothesis that there is no linear relationship between two variables, X and Y. From your sample of 20, you determine that SSR = 60 and SSE = 40. Compute the correlation coefficient by first computing r squared and assuming..
Given the data shown here, determine and interpret the Spearman coefficient of rank correlation. At the 0.02 level, does rs differ significantly from 0?
during the 3pm to 5pm time period cars arrive at a banks drive through window at an average rate of 15 customers per
in basketball a players free throws percentage ft is expressed as a number between 0 and 1 which represents the
Describe how you would collect your data, the level of measurement of your data, and which statistical technique you would use to analyze the data. Explain why you chose that statistical technique.
a plant purifies its liquid waste and discharges the water into a local river. the epa collects water specimens of the
If the appropriate yield for this bond is 12% p.a. compounding semi-annually, how much can the company raise?
A simple random sample of 91 adults is chosen. Find the 62 percentile for the sample mean.
What is the mean weight of my ancient gold coins - How do you consider this collection, a population or a sample - However, some formats are better than others in the sense that they convey important and relevant information in the given data set.
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