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A farmer collected the following data, which show crop yields for various amounts of fertilizer used.
Fertilizer (pounds/100 sq. ft)
0
4
8
10
15
18
20
25
Yield (bushels)
6
7
13
17
22
23
(a) Calculate the least-squares regression line for these data.
(b) Plot the points and the least-squares regression line on the same graph.
Your bakery produces loaves of bread with '1 pound' written on the label. Here are weights of randomly sampled loaves from today's production:
In a random sample of 35 trading days, the volume of a particular stock is recorded to determine whether the mean volume of the stock changed from its 2007 value of 35.14 million shares.
the number of customers at quiet morning bakery is believed to follow a poisson distribution with a mean of 2 customers
researchers measured the seated systolic blood pressure of 27healthy white males. the resulting publication reports x
Find the best point estimate of the mean and find the 95% confidence interval of the mean score for all golfers.
510 people were asked which of four fast food restaurant were their favorite. Determine if there is a preference for any one place over any other.
according to a recent report by the government new home construction fell to an 18-month low in october 2010
Calculate the 95% confidence interval for the proportion of students with at least one injury for each of the two subpopulation
a box contains 3 marbles 1 red 1 green 1 blue. consider an experiment that consists of taking 1 marble from the box
Why use the Wilcoxon T test. What is the hypothesis statements you used? Consider do we prefer working with dependent samples or independent samples? Explain
Suppose the inspector is unhappy with the previous result and would like to resample. How many rolls should be sampled to estimate the mean tensile strength within 1.5 PSI with 95% confidence?
Calculate the mean, median, and standard deviation for ounces in the bottles and construct a 95% Confidence Interval for the ounces in the bottles.
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