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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?
What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean ? (4%)
Method of assigning probabilities based on historical data is known the?
Can the formal hypothesis testing approach be used for non parametric tests? How are parametric and nonparametric statistics different?
Describe the sample distribution of p-hat, the sample proportion of college students with cell phones who send or receive text messages with their phones.
Below is the number of new cars sold at Sharkey in the last seven months and for the last eight months at Dave White. Do you agree with Mr. Sharkey? Use the .01 significance level."
The percentages of cones sales for chocolate, strawberry, and vanilla, are 75%, 60%, and 40%, respectively. For a randomly selected sale, define the following events:
11.9% reported they were in fair or poor health, including 10.5% of the married people, 19.6% of widows, 16.7% of divorced or separated, 12.5% of those never married, and 14% of those living with an unmarried partner.
People arrive at a restaurant at a rate of five per minute and wait to receive their order for an average of 5 mins. Customers eat in with a probability of 0.5 and carry out with a probability of 0.5.
Define validity and reliability. How can we insure our data is both reliable and valid? Which of these two do you think is the more important?
what is the probability of selecting a sample mean of 7 or less , with a sample population of 9 and mean of 10 and a standard deviation of 3.
A study is conducted to assess the impact of caffeine consumption, smoking, alcohol consumption, and physical activity on the risk of cardiovascular disease.
A personnel manager is concerned about absenteeism. She decides to sample the records to determine if absenteeism is distributed evenly throughout the six-day workweek.
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