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Use Chebyshev's theorm to find what percent of the values will fall between 156 and 276 fro a data set with a mean of 216 and standard deviation of 12. Use the Emperical Rule to find wha t two values 68% of the data will fall between for a data set with a mean of 219 and standard deviation of 20.
An entrepreneur owns two hotels, one in the western region of a certain state and the other in the eastern region. He thinks that the average amount spent by guests for lunch at his Friendly Café-West is less than $34.50
Using Binomial approximation, find the proportion of the days that will be rejected.
Use simple exponential smoothing with α = 0.33 to forecast battery sales for February through May. Assume that the forecast for January was for 22 set of tires.
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
The food distributor selects a sample of stores located in areas where he believes the shoppers are receptive to trying new products. What type of sampling does this represent?
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience?
The regression line yˆ2 = 3 + 2x has been fitted to the data points (4,8), (2,5), and (1,2). The residual sum of squares will be:
The 2010 Chevrolet Camaro with an eight-cylinder engine and automatic transmission has a combined gas mileage of 19 mpg. What percent of all vehicles have better gas mileage than the Camaro?
A researcher discovers the number of parking tickets that a group of students have received during their driving careers. Twenty students reply and they have received between 9 and 20 parking tickets.
With any statistical model, we assess the fit: Does the model accurately depict the truth? Explain how one of the following helps assess the "fitness" of the mean.
What is the difference between the probability value and the significance level? Please, also provide examples.
Assume that a 95% confidence interval for the mean is 15.0
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