Question

4.

A manufacturing company is considering the acquisition of a TR-LX61, a new robotic machine that is supposed to reduce the variable cost or unit cost of production. Since the acquisition of the TR-LX61 will involve some expenditures, management is willing to buy the machine only if they can be conviced that production costs will be less than $6.83 per unit produced.

Based on examination of 25 randomly selected units, they obtained an average variable cost of $6.15 and a standard deviation of $0.92.

What is the value of the test statistic to determine if production costs per unit are less than $6.83 ? (Use 3 DECIMALS)

5.

A Telecommunications company recently installed a new speech recognition system for its repair calls. In their old system, operators had to press keys on the numeric keypad to answer questions, which led to longer time on service calls. on service calls. The company is conducting a study to examine the impact of the new system on the average duration of service calls. Average duration of service calls was 31.4 minutes prior to the installation of the new system. They analyzed a random sample of 25 service calls and obtained an average duration of service calls of 28.2 minutes. Based on historical data, the standard deviation of duration of service calls is known to be σ =7.2 minutes.

What is the P value of the the hypothesis test to determine if the system has changed the average duration of service calls ? (Use 4 DECIMALS)

Answer #1

1. A Telecommunications company recently installed a new speech
recognition system for its repair calls. In their old system,
operators had to press keys on the numeric keypad to answer
questions, which led to longer time on service calls.
The company is conducting a study to determine the effectiveness
of the new system and to do so they want to estimate the average
duration of service calls with the new system.
They analyzed a random sample of 15 service calls...

A Telecommunications company recently installed a new speech
recognition system for its repair calls. In their old system,
operators had to press keys on the numeric keypad to answer
questions, which led to longer time on service calls.
The company is conducting a study to determine the effectiveness
of the new system and to do so they want to estimate the average
duration of service calls with the new system.
They analyzed a random sample of 13 service calls and...

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machine?
Select an answer Yes, the present value of the machine is greater
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capabilities with a new machine that costs $37,000 and has a
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production will provide a constant $6,000 per year of additional
income. Money can earn 0.9% per year, compounded continuously.
Should the company buy the machine?
(a) Yes, the present value of the machine is greater than the
cost by
(b) No, the present value of the machine is less than the cost...

New-Project Analysis
The Campbell Company is considering adding a robotic paint
sprayer to its production line. The sprayer's base price is
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The Campbell Company is considering adding a robotic paint
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$1,040,000, and it would cost another $20,500 to install it. The
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