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

Author Question: Dover Motors is a car dealership that sells new and used cars. Suppose they sold 140 used cars ... (Read 94 times)

ishan

  • Hero Member
  • *****
  • Posts: 546
on: Jun 24, 2018
Dover Motors is a car dealership that sells new and used cars. Suppose they sold 140 used cars during the most recent quarter. The average selling price was 10,325 with a standard deviation of 2,880.
 
  A random sample of 60 used cars from this population was selected. What is the probability that the sample mean exceeds 10,000?A) 0.5987
  B) 0.6736
  C) 0.8749
  D) 0.9115

Question 2

A survey by American Express Spending reported that the average amount spent on a wedding gift for a close family member is 166. A random sample of 45 people who purchased wedding gifts for a close family member spent an average of 160.50.
 
  Assume that the population standard deviation is 38. Use a 95 confidence interval to test the validity of this report and choose the one statement that is correct.A) Because this confidence interval does not include 166, the report by American Express Spending is not validated.
  B) Because this confidence interval does not include 166, the report by American Express Spending is validated.
  C) Because this confidence interval does include 166, the report by American Express Spending is validated.
  D) Because this confidence interval does include 166, the report by American Express Spending is not validated.
Business Statistics ¦ Donnelly ¦ 2nd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sultansheikh

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jun 24, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 45% of students answer this correctly


ishan

  • Member
  • Posts: 546
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

ricroger

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

The IAT sensor on this General Motors 3800 V-6 engine is in the air passage duct between the air ... The IAT sensor on this General Motors 3800 V-6 engine is in the air passage duct between the air ...
Most stepper motors use four wires, which are pulsed by the computer to rotate the armature in ... Most stepper motors use four wires, which are pulsed by the computer to rotate the armature in ...
Consider the production function ( ) 0.5 0.5 Y = AK L . Suppose both saving rate (s) and the ... Consider the production function ( ) 0.5 0.5 Y = AK L . Suppose both saving rate (s) and the ...
Suppose a country imports televisions. The country's supply and demand curves are shown in ... Suppose a country imports televisions. The country's supply and demand curves are shown in ...
Natalie and Marc playing cars Natalie and Marc playing cars
Chalk cliffs 90 meters (300 feet) high along the shore in Dover, England, were once seafloor Chalk cliffs 90 meters (300 feet) high along the shore in Dover, England, were once seafloor
Video: X chromosome inactivation in calico cats

For a complete list of videos, visit our video library