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Author Question: For a two-tail test, the p-value is the probability of obtaining a value for the test statistic as ... (Read 138 times)

daltonest1984

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on: Jun 24, 2018
For a two-tail test, the p-value is the probability of obtaining a value for the test statistic as
 a. likely as that provided by the sample
  b. unlikely as that provided by the sample
  c. likely as that provided by the population
  d. unlikely as that provided by the population

Question 2

A random sample of 100 credit sales in a department store showed an average sale of 120.00 . From past data, it is known that the standard deviation of the population is 40.00.
 a. Determine the standard error of the mean.
  b. With a 0.95 probability, determine the margin of error.
  c. What is the 95 confidence interval of the population mean?


lauravaras

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

B

Answer to Question 2

a. 4
b. 7.84
c. 112.16 to 127.84


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