Use truth tables to determine whether or not the following arguments are valid: a) Either sales or expenses will go up. If sales go up, then the boss will be happy. If expenses go up, then the boss will be unhappy. Therefore, sales and expenses will not both go up. b) If the tax rate and the unemployment rate both go up, then there will be a recession. If the GNP goes up, then there will not be a recession. The GNP and taxes are both going up. Therefore, the unemployment rate is not going up. discrete math

Use truth tables to determine whether or not the following arguments are valid: a) Either sales or expenses will go up. If sales go up, then the boss will be happy. If expenses go up, then the boss will be unhappy. Therefore, sales and expenses will not both go up. b) If the tax rate and the unemployment rate both go up, then there will be a recession. If the GNP goes up, then there will not be a recession. The GNP and taxes are both going up. Therefore, the unemployment rate is not going up. discrete math

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Which of the following statements is correct ? If a coefficient is significant at the 10% level, it must be significant at the 5% level. If a coefficient is not significant at the 10% level, it may be significant at the 5% level. If a coefficient is not significant at the 5% level, it must not be significant at the 10% level. O If a coefficient is not significant at 1% level, it may be significant at the 5% level.
A manufacturing firm finds that 80% of its new hires turn out to be good workers and 20% become poor workers. All current workers are given a reasoning test. Of the good workers, 90% pass it; 30% of the poor workers pass it. Assume that these figures will hold true in the future. If the company makes the test part of its hiring procedure and only hires people who meet the previous requirements and also pass the test, what percent of the new hires will turn out to be good workers?
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Suppose that BC financial aid allots a textbook stipend by claiming that the average textbook at BC bookstore costs $ 79.12. You want to test this claim. The null and alternative hypothesis in symbols would be: O Ho:u 2 79.12 H1:4 79.12 O Ho:p = 79.12 H1:p # 79.12 O Ho:H 79.12 O Ho:p 2 79.12 H1:p < 79.12 O Ho:u = 79.12 H1:µ 7 79.12 The null hypothesis in words would be: OThe average price of all textbooks from the store is $ 79.12 O The average price of textbooks in a sample is $ 79.12 O The average of price of all textbooks from the store is greater than $ 79.12. OThe proportion of all textbooks from the store that are less than 79.12 is equal to 50% OThe average of price of all textbooks from the store is less than $ 79.12. The population standard deviation is known to be 10 and based on a sample of 50 textbooks at the store, you find an average of 93.32. The point estimate is: The 95 % confidence interval is: to (to 3 decimals) Based on this we: O Reject the null hypothesis O Fail…
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