What percent of elderly people live in self-described senior housing that provides a number of supportive services?
a) 3%
b) 5%
c) 7%
d) 10%
b
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Women with high job stress or who have a pessimistic outlook on life may have increased risk of ____
a. breast cancer c. classic migraine headaches b. fatal asthma attacks d. coronary heart disease
The denominator of one-sample z test is also known as ______.
A. sample standard deviation B. standard error C. variance of distribution of means D. population standard deviation
Why are we currently having an epidemic of treatable diseases in children like mumps and measles, when these diseases are easily preventable?
a. The diseases are mutating faster than we can design cures b. Drugs that children take to treat ADHD block the effects of some of these treatments c. Many parents are not vaccinating their children because of the false fear that vaccines cause autism d. Increases in ease of travel between infectious areas spreads diseases faster than we can cure them.
Which of the following happens in the third stage of the scientific method?
A. Scientists use mathematical techniques to interpret results. B. Scientists develop expectations about an observed phenomenon. C. Scientists communicate results. D. Scientists test their hypotheses.