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Q1) Table below illustrates number of HDTVs sold at 3 chain stores owned by same company in the 4 quarters of last fiscal year. Process data by Excel using its two-way ANOVA without replication program.
Store 1
Store 2
Store 3
Quarter 1
69
121
103
Quarter 2
74
102
64
Quarter 3
65
212
126
Quarter 4
228
369
305
a) Test null hypothesis, H0: H0: m1 = m2 = m3 Describe what outcome of test tells you about either of the major effects.
A 95% confidence interval for µ is found to be 652 ± 21.56 = ($630.44, $673.56). Determine which of the following statements is true.
Among 500 freshmen pursuing a business degree at a university, 347 are enrolled in an economics course, 204 are enrolled in a mathematics course, and 160 are enrolled in both an economics and a mathematics course.
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Would it be reasonable to conclude that the 5 percent of the employees are not able to pass the random drug test?
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Each scenario involves randomly selecting n i observations from four, independent, Normal populations as described.
Probability using normal distribution.Sampling distributions. Given a normal distribution with μ = 50 and standard deviation σ = 9, if a sample of n = 100 is selected.
What is the appropriate conclusion based on the outcome of the hypothesis test?
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