C equal to u.3 ) greater than.5 7. The tails of a normal distribution curve: A)
ID: 3324498 • Letter: C
Question
C equal to u.3 ) greater than.5 7. The tails of a normal distribution curve: A) meet the horizontal axis at-3.0 B) never meet or cross the horizontal axis C) cross the horizontal axis at z 4.0 D) are nonsymmetric 8. For a normal distribution, the spread of the curve decreases and its height increases as: A) B) C) D) the sample size decreases the standard deviation decreases the ratio of the mean and standard deviation increases the mean increases 9. For the standard normal distribution, the z value gives the distance between the mean and a point in terms of the: A) mean B) standard deviation C) variance D) center of the curve 10. For a normal distribution, the z value for an r value that is to the left of the mean is always: A) equal to zero B) negative C) less than 1 D) positive 11. For the standard normal distribution, the area between 0 and : 1.37, rounded to four decimal places, is: 0 and: -2.32, rounded to 12. For the standard normal distribution, the area between four decimal places, is:Explanation / Answer
7. Tails of normal curve never meets the x - axis.
Hence,
Option B is correct.
8. Option B is correct.
9. Option B is correct.
10. Option B is correct.
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