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Author Question: The process of analyzing sample data to draw conclusions about the characteristics of a population ... (Read 68 times)

AEWBW

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on: Aug 1, 2018
The process of analyzing sample data to draw conclusions about the characteristics of a population is called _____.
 a. descriptive statistics
  b. statistical inference
  c. data analysis
  d. data summarization

Question 2

An engineer for an electric fencing company is interested in the mean length of wires being cut automatically by machine. The desired length of the wires is 12 feet. It is known that the standard deviation in the cutting length is 0.15 feet. Suppose the engineer decided to estimate the mean length to within 0.025 with 99 confidence. What sample size would be needed?


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samiel-sayed

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Reply #1 on: Aug 1, 2018
Answer to Question 1

b

Answer to Question 2

n = 240 (using z = 2.58)


AEWBW

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Reply 2 on: Aug 1, 2018
Thanks for the timely response, appreciate it

samiel-sayed

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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