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 212 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
YES! Correct, THANKS for helping me on my review

jackie

  • Member
  • Posts: 324
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

The Land Ordinance of 1785 called for surveying and dividing the Western Territories into square mil The Land Ordinance of 1785 called for surveying and dividing the Western Territories into square mil
General Motors, Cadillac Fleetwood. General Motors, Cadillac Fleetwood.
A symbol showing an engine with an arrow pointing down is used on some General Motors vehicles to ... A symbol showing an engine with an arrow pointing down is used on some General Motors vehicles to ...
A company that sells sweatshirts finds that the profit can be modelled by P(s)= ... A company that sells sweatshirts finds that the profit can be modelled by P(s)= ...
Let A ⊆ R and p ∈ A. Suppose A\{p}6= ∅. Prove that p is an isolated point of A if and ... Let A ⊆ R and p ∈ A. Suppose A\{p}6= ∅. Prove that p is an isolated point of A if and ...
An inventory record sheet shows a balance on hand of 972. During the month units sold were 111, ... An inventory record sheet shows a balance on hand of 972. During the month units sold were 111, ...
Video: Integumentary Anatomy

For a complete list of videos, visit our video library