A sample of 16 students showed that the variance in the number of hours they spend studying is 25 . At 95% confidence, test to see if the variance of the population is significantly different from 30 . Use the critical value approach
H0: ?2 = 30
Ha: ?2 ? 30 chi-square = 12.5; do not reject H0
critical values: 6.262 and 27.488
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Which of the following would appear as an extraordinary item on the income statement?
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If in a particular department, units completed are 2,000 and there are 600 units which are 20% complete. Manufacturing costs for this department are $10/unit. Equivalent units of output are:
a. 2,000 b. 400 c. 120 d. 2,600 e. 2,120
The failure rate for new products is high.
Answer the following statement true (T) or false (F)
Which of the following statements concerning beta are correct?
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