A pet food company is concerned that their pet food must have a certain % of the mineral zinc in the food. Too little and dogs get very sick. If the machinery is working correctly, the average zinc is u = .375 gram/lb of food. They sample 25 bags of food and find: x = .359 grams o = .05 grams The firm wants to know if their pet food is healthy. They decide on a 95% level of significance. Do the Z test. They ask you to perform the analysis. a) State the null and alternative hypotheses. Но: На: b) Draw a picture/graph of what you are trying to find. c) Find the critical value you will use. d) Compute the test statistic (from the data) e) What do you conclude? Why?
A pet food company is concerned that their pet food must have a certain % of the mineral zinc in the food. Too little and dogs get very sick. If the machinery is working correctly, the average zinc is u = .375 gram/lb of food. They sample 25 bags of food and find: x = .359 grams o = .05 grams The firm wants to know if their pet food is healthy. They decide on a 95% level of significance. Do the Z test. They ask you to perform the analysis. a) State the null and alternative hypotheses. Но: На: b) Draw a picture/graph of what you are trying to find. c) Find the critical value you will use. d) Compute the test statistic (from the data) e) What do you conclude? Why?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.3: Zeros Of Polynomials
Problem 67E
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A pet food company is concerned that their pet food must have a certain % of the mineral zinc in
the food. Too little and dogs get very sick. If the machinery is working correctly, the average
zinc is u = .375 gram/lb of food.
They sample 25 bags of food and find:
x = .359 grams
o = .05 grams
The firm wants to know if their pet food is healthy. They decide on a 95% level of
significance. Do the Z test. They ask you to perform the analysis.
a)
State the null and alternative hypotheses.
Ho:
На:
b)
Draw a picture/graph of what you are trying to find.
c)
Find the critical value you will use.
d)
Compute the test statistic (from the data)
e)
What do you conclude? Why?
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