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

Author Question: A researcher believes that women today weigh less than in previous years. To investigate this ... (Read 76 times)

sarasara

  • Hero Member
  • *****
  • Posts: 521
on: Jun 19, 2018
A researcher believes that women today weigh less than in previous years. To investigate this belief, she randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4 . A local census taken several years ago shows the mean weight of adult women was 115 lbs. The df for determining tcrit = _________.
 
  a. 41 c. 39
  b. 40 d. need more information

Question 2

The confidence interval for the population mean is _________.
 
  a. a range of values which probably contains the population mean
  b. a range of values which contains the population mean
  c. the same from sample-to-sample
  d. a range of values which probably contains the population meanand the same from sample-to-sample


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lolol

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jun 19, 2018
Answer to Question 1

B

Answer to Question 2

A


sarasara

  • Member
  • Posts: 521
Reply 2 on: Jun 19, 2018
Gracias!

juliaf

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Defying thousands of years of conventional wisdom, scientists are reporting that it is possible for Defying thousands of years of conventional wisdom, scientists are reporting that it is possible for
During drought years on the Galapagos, small, easily eaten seeds become rare, le During drought years on the Galapagos, small, easily eaten seeds become rare, le
“Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi “Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi
Chlamydia Rates in Women Chlamydia Rates in Women
Work and Gender: Women at Work in India Work and Gender: Women at Work in India
Hysterectomies have become so common that by age 60, one of three U.S. women has had her uterus ... Hysterectomies have become so common that by age 60, one of three U.S. women has had her uterus ...
Video: Cellular Respiration & Glucose Mobilization (Glucose transport & Phosphorylation of Glucose)

For a complete list of videos, visit our video library