Milk Makin' Math
Station One: Dairy Nutritionist
A dairy nutritionist is an animal health professional who specializes in the nutritional needs of dairy
cows. Nutritionists recommend the best diets for cows and monitor how cows respond to their feeding
program.
Percent
Decimal
Fraction
Hay
Silage
1. A dairy nutritionist recommends
feeding 60 pounds of feed to dairy
cows every morning. The feed is a
mix of hay, silage and almond
pulp. The mix is 70 percent hay,
20 percent silage and 10 percent
almond hulls. Represent each of
these numbers in a percent, deci-
mal and fraction form.
Almond
Hulls

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An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.