Author Question: A previous random sample of 4000 U.S. citizens yielded 2250 who are in favor of gun control ... (Read 93 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
A previous random sample of 4000 U.S. citizens yielded 2250 who are in favor of gun control legislation. How many citizens would need to be sampled for a 99 confidence interval to estimate the true proportion within 3?
 
  A) 1916 B) 1814 C) 1695 D) 1842

Question 2

A local consumer reporter wants to compare the average costs of grocery items purchased at three different supermarkets, A, B, and C.
 
  Prices (in dollars) were recorded for a sample of 60 randomly selected grocery items at each of the three supermarkets. In order to reduce item-to-item variation, the prices were recorded for each item on the same day at each supermarket.
 
  The results of the ANOVA test are summarized in the following table.
 
  Source df Anova SS Mean Square F Value Pr > F
  Supermkt 2 2.6412678 1.3206399 39.23 0.0001
  Item 59 215.5949311 3.6541514 108.54 0.0001
  Error 118 3.9725322 0.0336655
  Corrected Total 179 222.2087311
 
  What is the value of the test statistic for determining whether the three supermarkets have the same average prices?
  A) 108.54 B) 0.0001 C) 39.23 D) 1.3206



polinasid

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

B

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

For a complete list of videos, visit our video library