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A particular fast food restaurant is located near a University. 40% of the customers are students. Students prefer the spicier items. For example, a student customer will ask for extra hot sauce 75% of the time whereas a non-student will ask for extra hot sauce only 30% of the time. While waiting in line you observe a customer ask for extra hot sauce. What is the probability that this customer is not a student? The manager claims that about half the customers ask for extra hot sauce. Do you agree?
The American Automobile Association checks the prices of gasoline before many holiday weekends. Listed below are the self-service prices for a sample of 15 retail outlets during the May 2003 Memorial Day weekend in the Detroit
Probability using normal distribution.Sampling distributions. Given a normal distribution with μ = 50 and standard deviation σ = 9, if a sample of n = 100 is selected.
Develop the estimated regression line. Jensen expects to use the machine 30 hours per week, develop a 95% prediction interval for the company's annual maintenance expense.
Compare a tabular cum sum chart using standardized values h = 5 and k = 1/2. What is the information you learn.
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the decision rule.
Conclude that the population average pulse rate is 71.8. Reject the hypothesis that the population average pulse rate is 70.
The Travel Weekly International Air Transport Association survey asked business travelers regarding the purpose for their most recent business trip.
Find out annual break-even volume for the Rolling Creek Textile Mill.
In a one-way ANOVA analysis of 3 treatments, with the total number of 9 observations, with an equal number of observations in each treatment, mean-square-error (MSE) was found to be 24.905.
On which test did he do better compared to the rest of the class?
Determine the probability that their SAT scores will differ by more than 50 points?
illustrate briefly how an experimental study is conducted. What is the difference between the two types of variables used.
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