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1. Statisticians use terms like trial, outcome and success in a particular way in reference to probability. What do each of these three terms mean in this context?
2. How is the term independent used by Statisticians?
3. On a game show, eight people have won the grand prize and a total of 266 people have completed. Estimate the probability of winning the grand prize.
4. Bob compares his SAT Verbal score of 400 to Marge's ACT Verbal score of 20. "I whupped ya," he exclaims. "My score is 20 times your score!" Although his multiplication is good, his logic is faulty. Explain why.
Draw a scatter diagram. Based on the scatter diagram, does there appear to be any relationship between the number assemblers and production? Explain.
What probability distribution does n1 alone have? Specify the values of the sample size index and parameter for that distribution.
Use these statistics to construct a 94% confidence interval for the mean monthly consumption for the population of all Ontario households.
Assume you choose 20 houses at random. On average, how many houses of twenty would you expect to have DVD? Determine standard deviation of number of houses with DVD?
What is the p-value associated with the sample results? What is your conclusion based on the p- value?
Pattern that most accurately represents mean, median and mode is?
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
A simple random sample of 50 adults is obtained, and each person's red blood cell count (in cells per micro-liter) is measured. The sample mean is 5.23. The population standard deviation for red blood cell counts is 0.54.
The average could be a poor estimate of the spending of all teenagers given that only teenagers in malls were sampled.
An advantage of the permutation test over the t test for a difference in means is that - distribution interval or a bootstrap percentile interval
A researcher used stepwise regression to create regression models to predict Birthrate (births per 1000) using five predictors:
Portfolio Risk. Who would view the stock of Learning Tower of Pita as a risk reducing investment - the owner of a gambling casino or a successful bankruptcy lawyer? Explain.
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