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Assume you are the manager of a mustard seed factory in Colombia. Your company has received complaints that there isn't enough mustard seed in your economy size packages, which should have 1.7 ounces. You ask your foreman and chief operating officer Juan Valdez to test the new mustard seed packaging machine you are installing. He runs a sample of 36 packages, with the results of package sizes in ounces:
1.5 1.7 1.8 1.9 1.7 1.751.75 1.66 1.81 1.65 1.77 1.751.8 2.2 1.7 1.65 1.88 1.61.7 1.7 1.6 1.65 1.65 1.651.8 1.91 1.7 1.59 1.76 1.651.3 2.0 1.91 1.65 1.8 1.8
A. Calculate a 95% confidence interval on the average weight of packaged mustard seed. Explain very carefully to the packaging workers what the 95% confidence interval numbers mean. Include your Excel output. Is there anything you would want to note for management?
A major problem resulting from the lack of randomization in a cohort study is: the possibility that a factor that led to the exposure, rather than the exposure itself, might have caused the disease.
Below you are given a partial computer output based on a sample of 21 observations, relating an independent variable (x) and a dependent variable (y).
Determine the probability the sample of 40 will have a sales average less than $400,000.
The probability of drawing a 6 (to complete an inside straight) after discarding the ace.
A research company has designed three different systems to clean up oil spills. The following table contains the results, measured by how much surface area (in square meters) is cleared in 1 hour. The data were found by testing each method in seve..
Create a 95 % confidence interval for the true mean. Why might normality be the issue here?
Colleges typically use grade point average cutoffs to decide who graduates with honors and who is accepted into certain programs (such as teacher education, for example).
Using the information provided, determine the optimal number of clerks to have on duty each Satyrday to minimize the store's total expected cost.
WHich sampling method from the choices listed above would be best? Describe how you would carry out your chosen sampling method of a student from part (a)
A dish contains 20 gumballs - 9 blue, 6 red and 5 white. We randomly select two gumballs from the dish without replacement. a) Let X be the number of blue gumballs selected. Complete the probability distribution of X by filling in the appropriate p..
Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
Find the linear regression model for the South Central states. How does the equation for the South Central states compare to the one you found for the North Central states?
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