Table of normal distribution areas
[DOC File]Z-Score Practice Worksheet
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Find the range of values that defines the middle 80% of the distribution of SAT scores (372 and 628). Find the z-scores - -1.28, 1.28. For a normal distribution, find the z-score that separates the distribution as follows: Separate the highest 30% from the rest of the distribution. .52. Separate the lowest 40% from the rest of the distribution. .25
[DOC File]NORMAL MODEL:
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Notice these areas correspond to the 68% and 95% we mentioned in the table telling how much data is within 1, 2, and 3 standard deviations from the mean when dealing with the normal curve. The height problem above was done assuming a normal model and hence that people report their heights with infinite accuracy.
[DOC File]Topic 15:
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Since the total area under the curve of a normal distribution is 1, this probability can be calculated by finding the area under the normal curve for that interval. To find areas under any normal distribution, you can either use your calculator or tables. We will use Z to denote the standard normal distribution and will consider 3 cases:
[DOC File]Subsets of the Real Numbers
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Jan 21, 2011 · Find the area under the standard normal curve to the left of z = -1.00. Find the area to the left of z = 1.18. EXAMPLE 9: USING THE STANDARD NORMAL DISTRIBUTION TABLE. Table 3, Areas of a Standard Normal Distribution, is located in the Appendix as well as in the endpapers of the text. Spend a little time studying the table, and then answer ...
[DOC File]Lesson Title - VDOE
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Normal Distribution Practice Normal Distribution Exploration 3. Finding Area under a Normal Curve. Areas can be found under a normal curve by using the 68-95-99.7 rule if the areas are bounded at places where an exact standard deviation occurs.
[DOC File]When to Use the T-Distribution vs
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When to Use the T-Distribution vs. the Normal Distribution for Confidence Interval and Hypothesis Testing Problems for Means Main Point to Remember: You must use the t-distribution table when working problems when the population standard deviation (σ) is …
[DOC File]Topic 6: Standard Scores
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Example. What are the Zs corresponding to the extreme 5% of the normal distribution. 1. Draw a picture and shade or otherwise identify ½ the extreme percentage in each tail. 2. Use Table 1 to find the Z scores corresponding to the tail areas. 3. Answer: The Zs that identify the extreme 5 percent of the normal distribution are -1.96 and + 1.96.
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