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Author Question: A sample of 196 bags of sugar produced by Domain sugar producers showed an average of 2 pounds and 2 ... (Read 167 times)

biggirl4568

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on: Jun 24, 2018
A sample of 196 bags of sugar produced by Domain sugar producers showed an average of 2 pounds and 2 ounces with a standard deviation of 7 ounces.
 a. At 95 confidence, compute the margin of error and explain what it shows.
  b. Determine a 95 confidence interval for the population mean weight of bags of sugar produced by the company. Give the answer in ounces and at least two significant digits.
  c. Each bag of sugar produced is supposed to contain 2 pounds of sugar, but the company allows 2 higher or lower than the 2 pounds. Have they reached their desired goal? Explain why or why not by giving numerical facts.

Question 2

We can examine the effect of the sampling plan on both types of risks by varying the assumed
 a. percentage of defective items in the lot.
  b. number of defective items in the sample.
  c. probability of accepting the lot.
 d. number of units in the lot.


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tmlewis4706

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .98; it shows that 95 of all sample mean weights of sugar bags obtained using a sample size of 196 will be within 0.98 of the population mean weight.
b. 33.02 to 34.98 ounces
c. No, the margin of error, .98, is larger than the allowable margin of (.02)(32) = .64.

Answer to Question 2

a


biggirl4568

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Reply #2 on: Jun 24, 2018
Thank you


tmlewis4706

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Reply #3 on: Jun 24, 2018
No problemo


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