12. A cereal manufacturer uses a machine to fill boxes of its cereal. The company states...
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12. A cereal manufacturer uses a machine to fill boxes of its cereal. The company states on its packaging that each box contains 368 grams of cereal. It wants to test whether the machine is working properly. (a) What are the null and alternative hypotheses? (1 mark) (b) What is a type 1 error in this example? (1 mark) (c) What is a type Il error in this example? (1 mark) (d) Would you use a one-sided or two-sided test? Why? (2 marks) You take a random sample of 25 boxes and the sample mean is 372.5 grams. You know the population standard deviation is 15 grams. (e) What other information do you need before you can test the hypothesis? (1 mark) (4 marks) (0) What is your conclusion? 12. A cereal manufacturer uses a machine to fill boxes of its cereal. The company states on its packaging that each box contains 368 grams of cereal. It wants to test whether the machine is working properly. (a) What are the null and alternative hypotheses? (1 mark) (b) What is a type 1 error in this example? (1 mark) (c) What is a type Il error in this example? (1 mark) (d) Would you use a one-sided or two-sided test? Why? (2 marks) You take a random sample of 25 boxes and the sample mean is 372.5 grams. You know the population standard deviation is 15 grams. (e) What other information do you need before you can test the hypothesis? (1 mark) (4 marks) (0) What is your conclusion?
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a What are the null and alternative hypotheses The null hypothesis is that the machine is working properly and filling the boxes with 368 grams of cer... View the full answer
Related Book For
Business Statistics a decision making approach
ISBN: 978-0133021844
9th edition
Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry
Posted Date:
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