A normal quartile plot is given below for a sample of scores on an aptitude test

Question

A normal quartile plot is given below for a sample of scores on an aptitude test. Use the plot to assess the normally of scores on this test. Explain your reasoning A) The plot shows the sample is not normally distributed since it appears to be an approximately straight line. B) The plot shows the sample is normally distributed since it appears to be an approximately straight line. C) The plot shows the sample is not normally distributed since it appears to be a curved line. D) The plot shows the sample is normally distributed since it appears to be a curved line. Fill in the blank: A ___ estimate is a single value (or point) used to approximate a population parameter. A) sample B) population C) point D) statistic Find the value of za/2 that corresponds to a confidence level of 89.48%. A) 1.25 B) 1.62 C) 0.0526 D) -1.62

Explanation / Answer

12) option B statement is correct

13) option c, point estimate

14) option B is correct, 1.62

15) option A is correct, 0.778 < P < 0.883

16) option c is correct, 0.308 < P < 0.442

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