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

Author Question: In a data set that has a normal distribution what percent of scores will be within two standard ... (Read 32 times)

laurencescou

  • Hero Member
  • *****
  • Posts: 593
on: Jul 8, 2018
In a data set that has a normal distribution what percent of scores will be within two standard deviations above or below the mean?
 
  a. 34
  b. 68
  c. 95
  d. 99

Question 2

In a study to examine motivational techniques to help adolescent smokers to quit smoking, the null hypothesis states that the intervention will have no effect on this population. The researcher establishes a level of significance of 0.01.
 
  When analyzing the data, the researcher concludes that there is a significant difference between subjects receiving the intervention and those who do not. In this study, a Type I error means there is a:
  a. 1 chance that the conclusion is wrong.
  b. 1 chance that the conclusion is correct.
  c. 99 chance that the conclusion is wrong.
  d. 99 chance that the null hypothesis is correct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lorealeza

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 8, 2018
Answer to Question 1

ANS: C

Answer to Question 2

ANS: A


laurencescou

  • Member
  • Posts: 593
Reply 2 on: Jul 8, 2018
Thanks for the timely response, appreciate it

patma1981

  • Member
  • Posts: 292
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Appendicitis. (a) A normal appendix. (b) An inflamed appendix in appendicitis. Appendicitis. (a) A normal appendix. (b) An inflamed appendix in appendicitis.
2 Several oxygen-binding curves: for normal hemoglobin 2 Several oxygen-binding curves: for normal hemoglobin
Normal conduction pathway in the heart. Normal conduction pathway in the heart.
Standard precaution guidelines. Additional guidelines/protocols may be utilized depending on the ... Standard precaution guidelines. Additional guidelines/protocols may be utilized depending on the ...
Distribution of H2A.Z-containing nucleosomes near a transcription start site (TSS) Distribution of H2A.Z-containing nucleosomes near a transcription start site (TSS)
data data
Video: Major Elements in Biological Molecules: Proteins

For a complete list of videos, visit our video library