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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 has several ANOVA calculators.
The ages of cars owned by all employees of a large company have a bell shaped distribution with a mean of 8 years and a standard deviation of 2 years. Using the empirical rule, find the approx. percentage of cars (owned by those employees) that are b..
Draw a scatter diagram of the following bivariate data.
They estimated the proportion of students at the university who prefer outdoor exercise as (0.5745, 0.8217), with 95% confidence. Which of the following is an appropriate interpretation of this confidence interval?
Suppose x follows a distribution with density function: f(x)=C*abs(x-2), 0 =
A Manager needs to decide between two machines to put into market following a Weibull distribution. Machine X test unit cost $3000 with beta=3 and theta=500 Machine Y test unit cost $2000 with beta=3 and theta=400
Note that under the exponential assumption, P(X>t) = exp(-t/theta). If t=5, use the result from (a) to find an approximate one-sided lower 95% confidence limit for theta.
Develop a mathematical programming model and solve. Discuss your results [total profits, total costs, etc].
Determine the dependent variable(s)? Determine the value of the statistic? Write down the name of one variable not mentioned in this study that one might wish to control for.
An advantage of the permutation test over the t test for a difference in means is that - distribution interval or a bootstrap percentile interval
At the 0.10 significance level, can we conclude that the annual rates of return are higher on the big board?
It could not do anything with the airport and suffer a loss of revenue. The current value of raised revenue from a new airport is in question.
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
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