A student doing a history project finds the ages of all of the governors of California at the time they were first elected and the ages of all the governors of Massachusetts at the time they were first elected, and then computes the mean for each state. The best way to determine if there is a difference in the mean age for the past governors of the two states is to
a. compute a 95 confidence interval for the difference.
b. compute a confidence interval for each mean and see if they overlap.
c. test the hypothesis that the means are the same versus that they are different.
d. subtract the two computed means and see whether the difference is 0.
Question 2
Which of the following would not allow conclusions to be made about a population?
a. Using a random sample.
b. Using a random sample, but not randomly assigning treatments.
c. Using a volunteer sample, but randomly assigning treatments.
d. Measuring the whole population.
The span of Homo sapiens sapiens’ time on earth
Applying a time strip to the IV container.
The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim
Adenosine, Time of Day, and Hunger
Weak bones cause the spine to collapse over time
The Geologic Time Scale