P and z value
[DOC File]ASSIGNMENT Chapter 5
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P (z ( zo) = .5. h. P (z ( zo) = .0057. ANSWERS. 5.32 (4 points) Suppose x is a normally distributed random variable with ( = 30 and ( = 8. Find a value xo of the random variable x such that ... Find the z value for this score. b. Find the probability that someone scores between 10 and 15 on the Dental Anxiety Scale. c.
[DOC File]Exam 3 Practice Questions - University of Florida
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56. B The hypothesis was not rejected at level alpha=.05.So p value was higher than 0.05 and so higher than 0.025 as well. So the test will again fail to reject the null hypothesis at level =0.025. 57. A The hypothesis was rejected at level=0.01.So, p value was …
[DOC File]Z-Score Practice Worksheet
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Find the z score corresponding to a woman with a height of 70 inches and determine whether the height is unusual. Z = (70 – 63.6)/2.5 = 2.56. Three students take equivalent stress tests. Which is the highest relative score (meaning which has the largest z score value)? C has the highest z - …
[DOC File]Calculating Probability
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In general, the probability that x gets a value c, P(x=c), is defined as . the sum of all corresponding outcomes in S (i.e., the sample space) that are assigned to the value . x. Ex. x = # of heads in tossing 2 fair coins. 3. There are 3 ways …
[DOC File]Hypothesis Testing in Excel
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The p-values and critical values are given for one and two tailed tests. If these are small, the means are significantly different. That is, you can reject the null hypothesis of equality in favor of the alternative hypothesis that: the means are unequal, in the case of a two-tailed test . or.
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