For each of the following scenarios, explain which statistical procedure (estima

Question

For each of the following scenarios, explain which statistical procedure (estimating a single
proportion, estimating a single mean, hypothesis test for a single proportion, hypothesis test for
a single mean, hypothesis test or estimation of two proportions (dependent or independent),
hypothesis test or estimation of two means (dependent or independent)) would be most
appropriate. Assume all model requirements are met.
a. Do Suffolk rams fed an omega three supplement vs. their normal ration have improved
semen motility?
b. Does feeding hay before a grain meal vs. feeding grain before hay result in lower postfeeding
insulin concentration in horses?
c. What proportion of alpaca farmers participate in local farmers’ markets or craft fairs?
d. Are average prices paid at bull sales in Colorado higher for Red Angus or Simmental
bulls?
e. Are mean litter sizes higher for Smithfield hog operations relative to that of the industry
in general?

Explanation / Answer

Part a

Hypothesis test or estimation of two means (because here we want to test for the average values for the omega three supplement and normal ration)

Part b

Hypothesis test or estimation of two means (because here we want to test the means before and after feeding grain meal)

Part c

Estimating a single proportion (because here want to find out proportion of alpaca farmers who participated in local farmers’ market or craft fairs)

Part d

Hypothesis test or estimation of two means (because here we want to find out significant difference between the average values for Red Angus or Simmental bulls)

Part e

Hypothesis test for a single mean (because here we want to compare mean liter size for Smithfield hog operations with mean liter size in general)

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