« previous next »

Author Question: The symbol for _____ is a. sample covariance b. population covariance c. sample correlation d. ... (Read 48 times)

Deast7027

  • Hero Member
  • *****
  • Posts: 538
on: Jun 24, 2018
The symbol for _____ is  
 a. sample covariance
  b. population covariance
  c. sample correlation
  d. population correlation

Question 2

In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determined. Assume a population standard deviation of 450 kilowatt-hours. If the sample mean is 1858 kWh, the 95 confidence interval estimate of the population mean is
 a. 1760 to 1956 kWh.
   b. 1729 to 1987 kWh.
   c. 1758 to 1958 kWh.
   d. 1776 to 1940 kWh.


Eazy416

  • Sr. Member
  • ****
  • Posts: 360
Reply #1 on: Jun 24, 2018
Answer to Question 1

d

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Flipper tags have been extensively used in the study of penguin population dynamics. Flipper tags have been extensively used in the study of penguin population dynamics.
Sample tiered drug formulary for antibiotics. Sample tiered drug formulary for antibiotics.
The positive correlation between the ability of various neuroleptics to bind to D2 receptors and ... The positive correlation between the ability of various neuroleptics to bind to D2 receptors and ...
Policies on fertility and population growth Policies on fertility and population growth
World Population, 1850–2150 World Population, 1850–2150
Unisex Washroom Symbol Unisex Washroom Symbol
Video: Transferring genes into plants Animation

For a complete list of videos, visit our video library