Review 1 for test 3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 68% of the data lies within how many standard deviations about the mean? | one standard deviation
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| What percentage of data is within 2 standard deviations of the mean for a normal distribution | 95%
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| For a normal distribution with mean 100 and standard deviation 15, that value is 2 standard deviations more than the mean? | 130
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| For a normal distribution with mean 85 and standard deviation 15, What is the lower and upper value that captures approximately 68% of the data about the mean? | 70 to 100
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| What is the percentage area between the mean and the z score value of 2.4 for the standard normal distribution? | 49.18%
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| What is the percentage area to the right of the z score value of 2.4 for the standard normal distribution? | 0.82%
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| What is the percentage area to the left of the z score value of 2.4 for the standard normal distribution? | 99.18%
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| What is the z score on a standard normal curve that has 2.5% of the area to its right? | z = 1.96
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| What is the z score on a standard normal curve that has 33% of the area to its left? | z = - 0.44
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| What is the probability that the z score will be less than -1.64? | 0.0505 (or 5.05% chance that the z score will be less than -1.64)
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Created by:
kkamran
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