Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of three for each of the treatments (cars types).

 

 

b) Using the hypothetical data provided above, test whether the mean pressure applied to the driver’s head during a crash test is equal for each type of car. Use α =5%.      

Given: A \(50\:lb\) wheel has a radius of gyration \(k _G = 0.7 ft\)
Find: The acceleration of the mass center if \(M\:=\:35\:lb-ft\) is applied. \(\mu _s\:=\:0.3\), \(\mu _k\:=\:0.3\).

Transcript:
Linking flexible budgets and variances: hospital TO11.3 Waverley Hospital runs an outpatient clinic. Jenny Holt, the Hospital's CEO, is very concerned about 11.5 cost control and has asked that performance reports be prepared that compare budgeted and actual amounts for the clinic. She wants these reports to focus on three problem areas: the cost of medical assistants. clinic supplies and lab tests. Cost analysis studies have shown that the cost of clinic supplies with the number of patients served used is driven by the number of medical assistant labour hours worked. Lab tests are highly correlated The following information is available for June Labtests. Actual lab tests cost $159 027 and averaged 3.3 tests per patient. Each patient is anticipated to have 3 lab tests at an average cost of $65 per test Medical assistants. The standard wage rate is $20 per hour, and each assistant is expected to spend 30 minutes with a patient. Assistants worked 420 hours helping 790 patients, at an average pays of $31 per hour Clinic supplies: The cost of clinic supplies is budgeted at $12 per direct labour hour, and the actual cor of supplies used was $4575 Required: Prepare a report that shows the budgeted cost and the actual costs for the 790 patients that were seen by the clinic during June. Calculate the variance between these amounts and label these as favourable or unfavourable. 2 Based on your report prepared for requirement 1, determine whether Waverley Hospital has any significant problems with respect to the cost of clinic supplies and lab tests. Briefly discuss your findings 3 Calculate the spending and efficiency variances for lab tests. Do you think that the hospital has any significant problems with the cost of lab tests? (Hint: In applying the overhead variance formulas, think of the number of tests as equivalent to the number of hours, and the cost per test as similar to the variable overhead rate.) 4 Compare the lab test variances calculated in requirement 1, a flexible budget variance, with the sum of the variances in requirement 3. Discuss your findings and explain the relationship between the flexible budget variances and the standard cost variances for variable overhead.

Consider the following circuit.

The incident voltage wave on a certain lossless transmission line for which \(Z_0\:=\:50\:Ω\) and \(v_p\:=\:2\:×\:108\:m/s \) is \(V^+\left(z,\:t\right)\:=\:200cos\left(ωt\:-\:\pi z\right)\:V\).

(a) Find \(\omega \)
(b) Find \(I^+\:\left(z,\:t\right)\) The section of line for which \(z\:>\:0\) is replaced by a load \(ZL\:=\:50\:+\:j30\omega \) at \(z\:=\:0 \)
(c) Find \(ΓL\)
(d) \(V_S^-\:\left(z\right)\)
(e) \(V_S\:at\:z\:=-\:2.2\:m\)

 

What incentives arise for a central bank to fall into the time-inconsistency trap of pursuing overly expansionary monetary policy?

In some countries, the president chooses the head of the central bank. The same president can fire the head of the central bank and replace him or her with another director at any time. Explain the implications of such a situation for the conduct of monetary policy. Do you think the central bank will follow a monetary policy rule, or engage in discretionary policy?

A service garage uses 120 boxes of cleaning cloths a year. The boxes cost $6 each. Ordering cost is $3 and the holding cost is 10 percent of purchase cost per unit on an annual basis. Determine:

1. The economic order quantity
2. The total cost of carrying the cloths (excluding purchase price)
3. The average inventory
4. How many times to order per year?
5. The time between two orders, if the business days is 240 days in a year

The International Monetary Fund (IMF) should not bail out countries that experience a currency crisis. Discuss.

Find the cost function for the given marginal cost and fixed cost.

Marginal Cost
\(\frac{d}{\:dx}\:=\:\frac{1}{30}\:x\:+\:10\)

Fixed Cost \(x\:=\:0\)
\($2000\)

\(C = ?\)

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