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To test the effectiveness of four different types of lawn fertilizer, each type was applied to six different lawns. The same size patch of lawn was mowed for all 24 test units and the grass clippings were weighed. Is there any indication that the fertilizers have an effect on the average weight of the grass clippings? Is there any reason to believe that the type of yard also affects the average weight of the grass clippings?
question 1 what is a chi-squared test? provide a fully referenced explanation.question 2 provide a brief example on a
an insurance company is reviewing its current policy rates. when originally setting the rates they believed that the
Complete the ANOVA summary table and perform post hoc comparisons, if necessary and what conclusions can be drawn from the F-ratio and the post hoc comparisons?
Suppose that the number of calories in McDonald's Egg McMuffin is normally distributed random variable with mean of 290 calories and standard deviation of 14 calories.
given the correlation value between anxiety and exam score could you assume that heightened anxiety is causing at least
Find a point estimate of the population mean. Find the 95% confidence interval of the true mean. Assume the population standard deviation was 0.8.
Compare a tabular cum sum chart using standardized values h = 5 and k = 1/2. What is the information you learn.
the life time t of a durable substance is an exponential distributed ramdom varialble with average 1.5 year
a prize is hidden at random behind one of three doors. if you pick the correct door you get the prize that is behind
andy always goes to work at 7 oclock. each day he either drives to work or takes the light rail to work. if andy drives
Explain your answer to someone who is familiar with the t test for a single sample, but not with the t test for independent means.
What proportion of children 10 to 15 years of age would be classified as hyperlipidemic assume that hyperlipidemia is defined as cholesterol level over 200?
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