Find the Indicated Probability or Percentage for the Sampling Error

question 3

Multiple Choice

Find the indicated probability or percentage for the sampling error.
-Scores on an aptitude test are distributed with a mean of 220 and a standard deviation of 30. The shape of the distribution is unspecified. What is the probability that the sampling error made in
Estimating the population mean by the mean of a random sample of 50 test scores will be at most 5 points?

• A)0.881
• B)0.135
• C)0.762
• D)Cannot be determined, because the distribution of the population is not known to be normal.

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