Assuming you are testing a null hypothesis (two-tailed) about the population mean and determining whether to reject the null hypothesis based on the t-stat at the 95% confidence level, which t-stat would warrant rejecting the null hypothesis?
A. 1.6
B. 3
C. -1.4
D. 1.4
Answer: B
You might also like to view...
Answer the following statements true (T) or false (F)
1. The movement of DNA polymerase continues unimpeded if a thymine dimer is present in the DNA double helix. 2. Cells are normally limited to one DNA repair system that corrects DNA mistakes. 3. Patients who suffer from xeroderma pigmentosum (XP) have a defective mismatch repair system. 4. Cancers originate from a single cell.
Hydrolases are one important class of enzyme that function to catalyze:a
splitting a molecule using water. b. conversions between isomers. c. reactions in which double bonds are formed. d. oxidation-reduction reactions. e. the transfer of a functional group.
Some microbes convert iron to magnetite, which is then used as an internal compass to help position the microbe correctly in its environment.
Answer the following statement true (T) or false (F)
The technique of vaccination as developed by Jenner was an improvement over variolation because
A) cowpox was common in Europe at the time while smallpox was not. B) cowpox vaccination was not just preventative but could also cure an active case of smallpox. C) the smallpox virus mutates frequently but the cowpox virus does not. D) the cowpox virus used by Jenner was not fatal to humans but provided protection against smallpox. E) Jenner's technique required a lower rate of herd immunity to prevent the spread of smallpox.