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The number of cracks in a section of interstate highway that are significant enough to require repair is assumed to follow a Poisson distribution with a mean of two cracks per mile. What is the probability that there are no cracks that require repair in 5 miles of highway?
Why crime statistics should be collected, how they are used, and how analysis of those statistics could benefit the community.
How much of the variation in the dependent variable would be explained by the independent variable in this situation? Use job satisfaction and employee turnover as the variables for this problem.
Divide your data in half, your first 8 observations and your last 7 observations. Then use ANOVA to test to see if there is a significant difference between the two halves of your data. This list of Webpages that Perform Statistical Calculations h..
Strack, Martin, and Stepper (1988) found that people rated cartoons as funnier when holding a pen in their teeth (which forced them to smile) than when holding a pen in their lips (which forced them to frown). For this study, identify the independ..
What maximum variance of the raw score population could you have and still be able to reject the null hypothesis of μ = 20 (α = .05), if the sample size is 100 and the sample mean is 22?
How many nickels does a coin counter manufacturer need to weigh so that she can be 98% confident that her sample mean is within 25 milligrams.
A random sample of 15 customers is selected, and the results are as follows: 8.02 4.08 5.79 8.73 5.47 5.64 8.01 10.49 8.35 5.9 9.66 9.91 3.82 6.68 6.17 a) calculate arithmetic mean, median, mode, first quartile and third quartile.
Bingo Hamburger Co has a chain of 12 stores in a large city. Sales figures and profits for the stores are given in the following table. Obtain a regression line for the data & predict profit for a store assuming sales of $10 million.
If random sample of size n = 16 are selected, can we say anything about the xbar distribution of sample means?
Determine the least square trend equation. Estimate the number of employees in 2008. By how much the number of employees decreases (or increases) per year on the average?
Illustrate your answer with a histogram of the sample's scores and sketches of the population distribution and the distribution of means, showing the t score and cutoff points for significance.
Content of 100 randomly chosen cigarettes was 3.1 mg. What is the probability that the sample mean would have been as high as or higher than 3.1 mg if the company's claims were true?
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