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[DOC File]Section 1
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Normal probability plot – a graph the plots observed data versus normal scores Normal Scores – is the expected Z-score of the data value if the distribution of the random variable is normal Correction for continuity – ± 0.5, using a continuous density function to approximate a discrete probability
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[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
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[DOC File]MATH 1530 – Quiz # 7
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Find the missing “z-value” given each of the following probabilities come from a Standard Normal Distribution. In each case, label and shade the graph writing the appropriate probabilities over the shaded region, then state the z-score that provides those probabilities as your solution. 1. If , then = _____ . 2. If , then = _____ . 3.
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[DOC File]Normal Distribution In-class exercises
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That probability distribution is the normal distribution. This is the main reason the normal distribution is so important. Practical fact. 4. The distribution of Z's computed from each sample, using the formula. X-bar - (Z = -----( / (N. will be or approach (as sample size gets large) the Standard Normal Distribution with mean = 0 and SD = 1.
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[DOC File]Graphs of Normal Probability Distributions:
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(Sometimes called the Gaussian distribution.) We could look at a very complicated formula which speaks of the normal distribution, however, we will just look at the graph of a normal distribution to get a better idea of what we are discussing. Normal Curve – graph of a normal distribution. bell-shaped curve. *** View Figure 6 – 1 (text p. 327).
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[DOC File]Probabilities for the Normal Distribution with the TI-83
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Calculating the Inverse Normal Distribution 2. Using invNorm 2. Calculating Probabilities for the t-Distribution 3. Using tcdf 3. ... If instead your data is a frequency distribution table, enter your data into two lists, say L1 for the values and L2 for the frequencies.
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[DOCX File]www.humbleisd.net
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The normal probability plot is roughly linear, so the distribution of squirrel weights is approximately Normal. (Some students may argue that there is slight skew to the right, based on the lowest two or three values for squirrel weight.)
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[DOCX File]WordPress.com
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(a)The graph below is that of the . standard. normal curve. The shaded area represents the probability that the reaction time of a person chosen at random is between 0.70 and 0.79 seconds. (i)Write down the value of . a. and of . b. (ii)Calculate the probability that the reaction time of a person chosen at random is (a)greater than 0.70 seconds;
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[DOC File]Lab on Normal distribution using Minitab
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Graph > Probability Distribution Plot… and select. View Single . and click. OK. Fill in the dialog boxes as shown below. Click . OK. to produce the graph below. Option 1: Use. CALC > Probability Distributions > Normal. to calculate the percent of adult American women that you expect to have cholesterol level under 200 (a healthy level).
probability and normal distribution

Normal probability distribution graph