(b) One correct answer to this part is as follows: We can say that we are 95 percent confident the average balance for all overdue bills is in the range from $480 to $520. Since the standard error SE for the sample mean should equal 100/square root of 100 = 10, the margin of error would be twice this value, or $20. This means $480 to $520 is a 95 percent confidence interval for the average of all overdue balances. Another correct answer to this part is as follows: Instead of the average balance, we can find the percentage of all balances that fall in this interval. When we think of all balances, $480 is 0.2 standard deviations below the average (480 -500)/100 = - 0.20), and $520 is 0.2 standard deviations above the average (520 -500)/100 = 0.20).
3. The rate variance is calculated by the difference between the $16.90 actual labor rate vs the $16 budgeted rate, then we multiply the difference by the 9000 actual labor hours which gives us an $8,100 unfavorable rate variance. To figure out the efficiency variance we multiply the $16 budgeted rate by the difference between the 9,000 actual labor hours and the 10,000 budgeted hours, giving us a $16,000 favorable efficiency variance. As a result of the difference between the rate and efficiency variances we end up having a $7,900 favorable flexible budget variance. 4.
5) Information about Clearwater Company's direct materials cost follows: Standard price per materials ounce $ 100 Actual quantity used 8,700 grams Standard quantity allowed for production 9,100 grams Price variance $ 76,125 F ________________________________________ Required: What was the actual purchase price per gram? (Round your answer to 2 decimal places. Omit the "$" sign in your response.) Actual purchase price $ 91.25 Total grade: 0.0×1/1 = 0% Feedback: Actual Costs = AP × 8,700 Actual Inputs at Standard Price = $100 × 8,700 =$870,000 Price Variance = $76,125 F 8,700 × AP = $870,000 – $76,125 AP = $91.25 ________________________________________ Question 3: Score
2.12 b. 1.734 c. -1.740 d. 1.740 ANSWER: d -same process but now go to one tailed α=0.05 and dof = 17 4. Read the t statistic from the table of t distributions and circle the correct answer. A one-tailed test (lower tail), a sample size of 10 at a .10 level of significance; t = a. 1.383 b.
AP Statistics Name _______________ 3/24/09 Wood/Myers Period _____ Test #12 (Chapter 13) Honor Pledge __________ Part I - Multiple Choice (Questions 1-10) – Circle the letter of the answer of your choice. 1. An SRS of size 100 is taken from a population having proportion 0.8 successes. An independent SRS of size 400 is taken from a population having proportion 0.5 successes. The sampling distribution for the difference in sample proportions has what standard deviation?
Use division to prove that x = 3 is a real zero of y = −x 3 + 9x 2 − 38x + 60. 2 ID: A quiz 6.1-6.3 Answer Section MULTIPLE CHOICE 1. D 2. D SHORT ANSWER quintic trinomial 2x 2 − 3x 3 + 1 20x5 – 8x4; quintic binomial f(x) = 0.08x4 – 1.73x3 + 12.67x2 – 34.68x + 35.58 T(x) = 0.4x 3 + 0.8x 2 + 0.1x; 630.3 thousand trees 4x(x – 4)(x + 6) relative minimum: (0.36, –62.24), relative maximum: (–3.69, 37.79), zeros: x = –5, –2, 2 10. 0, 3, 2 3.
ECO 550 (Managerial Economics) Week 1 – 11 Quiz Test IF You Want To Purchase A+ Work Then Click The Link Below , Instant Download http://hwnerd.com/ECO-550-Managerial-Economics-Strayer-University-Complete-Quizez-1416.htm?categoryId=-1 If You Face Any Problem E- Mail Us At Contact.Hwnerd@Gmail.Com ECO 550 Managerial Economics Strayer University Complete Quiz Bank Week 1 – 11 Latest Solution Chapter 1 Quiz: Introduction and Goals of the Firm 1.The form of economics most relevant to managerial decision-making within the firm is: 2.If one defines incremental cost as the change in total cost resulting from a decision, and incremental revenue as the change in total revenue resulting from a decision, any business decision
MODEL CRITIQUE* Critique of Greg Critser’s “Too Much of a Good Thing” Citing statistics on the alarming increase in the rates of childhood obesity, especially in the industrialized West, Greg Critser (L.A. Times Op-Ed, 22 July 2001) argues that parents can help avert obesity in their own homes by more closely supervising the diets of their children, serving reasonably sized portions, and limiting snacks. Critser, who has extensively researched obesity in his book Fat Land: How Americans Become the Fattest People in the World (Houghton Mifflin 2003), argues that through education we can create a leaner cultural norm, much as the French did earlier in the century when faced with a similar problem. The stakes for maintaining a healthy body weight
Using the 99 percent confidence interval, can the bank manager be 99 percent confident that mew is less than six minutes? Explain. d. Based on your answers to parts b and c, how convinced are you that the new mean waiting time is less than six minutes? (a) (i) 95% CIn = 100 x-bar = 5.46 s = 2.47 % = 95 Standard Error, SE = σ/√n = 0.2470 z- score = 1.9600 Width of the confidence interval = z * SE = 0.4841 Lower Limit of the confidence interval = x-bar - width = 4.9759Upper Limit of the confidence interval = x-bar + width = 5.9441The confidence interval is [ 4.976 5.944](ii) 99% CIn = 100 x-bar = 5.46 s = 2.47 % = 99 Standard Error, SE = σ/√n = 0.2470 z- score = 2.5758 Width of the confidence interval = z * SE = 0.6362 Lower Limit of the confidence interval = x-bar - width = 4.8238Upper Limit of the confidence interval = x-bar + width = 6.0962The confidence interval is [ 4.824 6.096](b) Yes, the entire 95% CI is less than 6. The manager can be 95% confident that μ is less than 6 minutes.
The third viewpoint is from the United Kingdom found that the adverse effects of food dyes on symptoms of ADHD were moderated by histamine degradation gene (HNMT). And food additives can trigger histamine release and the HNMT can impair the histamine clearance (389). The author’s purpose in writing of this article was to address the role that food additives and artificial dye in ADHD. There was research done by Dr. Benjamin Feingold in the 1970’s that did not provide enough convincing evidence. More rigorous empirical studies were done over the last twenty years and they were still not conclusive.