In the absence of any information concerning the population proportion the conservative researcher should use which of the following estimates when calculating sample size?
a. 1.00
b. 0.20
c. 0.50
d. 0.80
e. 0.00
Question 2
After the households in the previous question were surveyed, the sample proportion of households using liquid soap was determined to be 0.2 . The precision at the 95 confidence level is + or
a. 0.028 percentage points.
b. 0.032 percentage points.
c. 0.040 percentage points.
d. 0.057 percentage points.
e. 0.141 percentage points.
Four types of cellular responses to positional information in animals.
Three ways that factors affect mortality in response to changes in population density.
Natural selection of a population for dark coloration.
Laboratory Requisition Information
World population density
Flowchart illustrating how genetic information encoded in DNA produces protein