This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims ... (Read 75 times)

vicotolentino

  • Hero Member
  • *****
  • Posts: 552
on: Jun 24, 2018
An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims that over the past 5 years, the mean daily revenue was 675 with a standard deviation of 75. A sample of 30 days reveals a daily mean revenue of 625 and a standard deviation of 70. Which of the following tests will be the most appropriate?
 
  A) t test for the mean B) Z test for the proportion
  C) Pooled-variance t test D) Separate-variance t test

Question 2

A major Blu-ray rental chain is considering opening a new store in an area that currently does not have any such stores. The chain will open if there is evidence that more than 5,000 of the 20,000 households in the area are equipped with Blu-ray players. It conducts a telephone poll of 300 randomly selected households in the area and finds that 96 have Blu-ray players. Which of the following tests will be the most appropriate?
 
  A) t test for the mean B) Z test for the proportion
  C) Pooled-variance t test D) Separate-variance t test


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leeeep

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jun 24, 2018
Answer to Question 1

A

Answer to Question 2

B


vicotolentino

  • Member
  • Posts: 552
Reply 2 on: Jun 24, 2018
Excellent

diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai
Concentric double-pipe heat exchanger for co-current flow Concentric double-pipe heat exchanger for co-current flow
A current model for protein secretion by prokaryotes A current model for protein secretion by prokaryotes
North Atlantic Current North Atlantic Current
Find the voltage, current and power for each resistor in the circuit below Find the voltage, current and power for each resistor in the circuit below
What is the current in Figure 16-1(b) if the diode is made of silicon and the polarity of the ... What is the current in Figure 16-1(b) if the diode is made of silicon and the polarity of the ...
Video: How does asthma work?And How do you treat asthma?

For a complete list of videos, visit our video library