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

Author Question: A z-test for testing hypotheses about a population proportion is to be conducted. True or false: One ... (Read 81 times)

ssal

  • Hero Member
  • *****
  • Posts: 572
on: Jul 24, 2018
A z-test for testing hypotheses about a population proportion is to be conducted. True or false: One condition for this z-test to be valid is that the sample size is adequately large enough.
 a. True
  b. False

Question 2

Scores on an English spelling test are determined for a sample of 16 5th graders both before and after they learn some new vocabulary tricks of the trade. In the population of difference scores it is know that students improve with an average of 3 points, with a standard deviation of 4 points, and that the distribution of the differences is approximately normal. What is the probability that the 16 students in the sample do not improve, on average? a
 a. < 0.0001
  b. 0.0013
  c. 0.2266
  d. 0.7500


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

maya.nigrin17@yahoo.com

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

B


ssal

  • Member
  • Posts: 572
Reply 2 on: Jul 24, 2018
YES! Correct, THANKS for helping me on my review

ricroger

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Patient having glaucoma test. Patient having glaucoma test.
Performing a PKU Test Performing a PKU Test
The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ... The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ...
Hares and Lynx population change "الأرانب البرية و الوشق" Hares and Lynx population change "الأرانب البرية و الوشق"
Testing the arterial supply to the lower extremities Testing the arterial supply to the lower extremities
If the following ions Ca2+, Cl-, Na+ and CO32- are placed in a test tube, the precipitate ... If the following ions Ca2+, Cl-, Na+ and CO32- are placed in a test tube, the precipitate ...
Video: DNA Sequences - Dideoxy Sequencing

For a complete list of videos, visit our video library