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The following data pertain to x, the amount of fertilizer (in pounds) that a farmer applies to his soil, and y, his yield of wheat (in bushels per acre):
Assuming that the data can be looked upon as a random sample from a bivariate normal population, calculate r and test its significance at the 0.01 level of significance. Also, draw a scattergram of these paired data and judge whether the assumption seems reasonable.
1) that the mean prey catching time was 30 seconds, 2) the standard deviation was 5.5 seconds and 3) that the scores he has collected are normally distributed. (Note: remember that the proportions in the Z-table can also be viewed as probabilities..
a population has a mean u72 and a standard deviation o25. find the mean and standard deviation of a sampling
Using the Empirical Rule for this data, what amount should be considered the cut-off for sales amounts being classi ed as unusually low?
1. based on the background information describe briefly how samples of students are obtained from each university.
question 1 the gallop poll folks found that 27 of adults surveyed national survey said that they had been in a
The following table gives the homerun distances of ten home runs hit by Sammy Sosa and Mark McGwire. Find the range and standard deviation for each player
1. the local county is considering a budget proposal that would reallocate funding to renovate the city pools. a survey
It is reported in USA Today that the average flight cost nationwide is $342.59. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $342.59. What are the appropriate hypoth..
You are given an annual time series with 40 consecutive values and asked to fit a fifth-order auto-regressive model.
Consider a Poisson distribution with a mean of two occurrences per time period.
If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is between 165 and 200.
Discuss the advantages of non-parametric methods. As an educator, how would they be useful to you? In what situations would you use them?
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