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Suppose a retailer claims that the average wait time for a customer on its support line is 179 seconds. A random sample of 57 customers had an average wait time of 169 seconds. Assume the population standard deviation for wait time is 51 seconds. Using a 95?% confidence?interval, does this sample support the? retailer's claim?
Using a 95?% confidence? interval, does this sample support the? retailer's claim?
A. Yes?, because the? retailer's claim is between the lower limit of seconds and the upper limit of seconds for the mean wait time.
B. No?, because the? retailer's claim is not between the lower limit of seconds and the upper limit of seconds for the mean wait time.
Suppose the United States levied a 20% tariff on imported cars. Explain the effects on:
Categorize the estimate and compare its accuracy with the AACE International standards. How did your account for "change orders?"
The special cost structure that is necessary for a firm to adopt a peak-load pricing policy is:
English is becoming the usual language for international transactions, even if the language of neither country is English.
What is the Internal Rate of Return (IRR) of this renewable energy system?
Where there currently is a tariff. What is the effect of this tariff on the U.S. economy.
Many economists claim that the property tax is the superior tax for municipal governments. Do you agree or disagree? What are the pros and cons of the property tax? If you were advising a city with respect to the property tax and how much the city sh..
The optimal amount of capital and labor used by a firm in the production process is usually obtained by the technique of cost minimization, rather than amximizing the level of output produced. Explain why this is usually true using isoquants and an i..
During the given months of 2014, the Federal Reserve has continued its bond-buying program, called "Quantitative Easing 3" (QE3). During April, the Fed purchased $40 billion worth of bonds. Because of QE3, which of the answer choices gives correct po..
A rural subdivision has several miles of roads that need a new surface treatment. One option is a gravel base and pavement with an initial cost of $500,000 that will last for 15 years and has an annual maintenance cost of $100/mile. Compute the numbe..
The market is moving fast, and the product will be closed out in 2 years. What is the new product's IRR for deciding whether to proceed?
In the medical care sector, the decisions of what services should be produced, how they should be produced, how they should be distributed, and how to allow for growth and innovation must be made. What combination of non-medical and medical goods and..
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