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The test statistic for a two-sided significance test for a population mean is z = -2.12. What is the corresponding P-value?
A) 0.017
B) 0.034
C) 0.483
D) 0.983
Now compute the standard deviation for this distribution.
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
Simulate both one-and two-teller systems, calculate waiting time, average queue length, and percentage utilization for each system.
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
Test the hypothesis that the annual incomes of Teachers in areas of more than 500,000 are significantly more than those in areas of less than 100,000. Use the 5% level of risk.
Scores on a test have a mean of 73 and Q3 is 81. The scores have a distribution that is approximately normal. Find P90.
Using data provided, test if there is a difference between means at alpha =.05.
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be:
Give the Z score for person who scores (a) 340, (b) 310, and (c) 260. Give the raw scores for persons whose Z score on this test are (d) 2.4, (e) 1.5, (f) o, and (g) -4.5
Determine z score corresponding to minimum height requirement and determine z score corresponding to maximum height requirement.
State the hypotheses for a right-tailed test.
Describe the factors that might cause variation in weight of Tootsie Rolls during manufacture.
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