What is an acceptable probability of sampling error that may have skewed the results in most scientific studies?
A. 80%
B. 50%
C. 25%
D. 10%
E. 5%
Answer: E
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Astronauts returning to Earth from an extended stay in space have to be extremely careful not to break a bone. It takes several weeks to restore normal bone strength. Which would be the best regimen to rebuild the lost bone tissue?
A) Stay inactive, avoiding exercise until the lost bone tissue is rebuilt. B) Hit the gym and get going with a few weeks of heavy weight lifting. C) Several weeks of swimming will rebuild all lost bone mass. D) Start with walking and build up to jogging, with an extra regimen of light weight lifting in the gym.
All of the following are true regarding smoking EXCEPT
a. smoking inhibits the T cells from working properly in the lungs. b. smoking is viewed by many today as being socially unacceptable. c. research shows that the nicotine patch is no more effective than a placebo. d. choosing a "quit date" can increase the chance of quitting successfully.
A group is considered paraphyletic if
A. not all descendants of the common ancestor are included. B. the group does not contain the most recent common ancestor. C. the common ancestor of the group is not included in the group. D. all members of the group share a common ancestor. E. it is the most parsimonious grouping.
In somatic hypermutation, the mutation of immunoglobulin genes occurs at much higher rates than the mutation rates observed in other genes
Indicate whether the statement is true or false.