« previous next »

Author Question: Which of the following might one do in order to increase the power of a z test? a. Increase the ... (Read 72 times)

kaid0807

  • Hero Member
  • *****
  • Posts: 515
on: Jun 20, 2018
Which of the following might one do in order to increase the power of a z test?
 
  a. Increase the sample size.
  b. Use a two-tailed test.
  c. Decrease sample size.
  d. None of the above.

Question 2

A researcher is interested in whether high school students who play sports have a higher or lower body mass index (BMI) than students in the general population. The researcher is unsure whether playing sports will decrease body mass (due to more calories burned) or increase body mass (due to more muscle mass). He compares their average body mass index to that of students in the general population and finds that zobt = +1.92 . This is a _____ test and the researcher should conclude _____.
 
  a. one-tailed; that students who are athletes have significantly higher BMIs
  b. two-tailed; that students who are athletes have significantly higher BMIs
  c. one-tailed; that students who are athletes do not have significantly higher BMIs
  d. two-tailed; that students who are athletes do not have significantly higher BMIs


jonathanballen97

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jun 20, 2018
Answer to Question 1

a

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Varus Stress Test Varus Stress Test
GEN. BIO. TEST HELP [EMERGENCY] GEN. BIO. TEST HELP [EMERGENCY]
Triceps Reflex Test Triceps Reflex Test
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
Metastasis Cancer Order Metastasis Cancer Order
The Wisconsin Card Sorting Test. This woman is just starting the test. If she places the first card ... The Wisconsin Card Sorting Test. This woman is just starting the test. If she places the first card ...
Video: Mitochondrial Structure & ETC Protein Complexes (Protein Complexes and Electron Transport)

For a complete list of videos, visit our video library