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Most people that travel to Quebec feels that gas prices there tend to be more than in Ontario. Suppose a random sample of 40 gas stations in Ontario in 2010 had an average price of $1.10/litre and a sample of 35 in Quebec was $1.15. Assume the population standard deviation is 0.08 in Ontario and 0.12 in Quebec. Let Ontario be population 1. (a) Determine if there is a difference in gas prices between Ontario and Quebec. Use a test significance level of 0.01 and p-value approach. Clearly state hypothesis to be tested and conclusions. (5 marks) (b) Suppose you were writing an article for the Toronto Star about the difference in mean gas prices and at the end of the article you make this statement: "The poll's margin of error for the difference in mean gas price is X, 18 times out of 20" What is the value of x
A paper company is interested in estimating the proportion of trees in a 500-acre forest with diameters exceeding 2 feet. The company selects 25 plots (100 feet by 100 feet) from the forest and utilizes the information from the 25 plots to help..
1. an art professor was interested in seeing what size group is best to prime the pump so to speak to encourage
Decision Trees are graphic displays of the decision process. When do you feel it is appropriate to use decision trees?
Simple random sampling
a. Use the multiplication rule to find the probability that your first two digits match those drawn and your last two digits do not match those drawn. That is, find P(MMXX), where M denotes a match and X denotes a digit that does not match the ..
Evaluate the value of beta for each stock. Which of these stocks would you expect to perform best in an up market? Which would you expect to hold their value best in a down market?
Design and describe a computer-based simulation model
What are the effects of gender and worksite location (on- or off-site) on level of confidence and is there a gender difference in confidence?
1. at the bottom left side of the applet set n equal to 10 and then check the animate box. now click on flip. record
Identify stories that exist in the data provided. A "story" is an analysis of what the data shows rather than just what the data says. Said another way, how might you interpret the data?
Lakeshia sells 3,600 high end folding therapy
Discuss the level of measurement, assumptions that can be made, statistics that can be calculated from these data, and the general quality of the data
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