Answer:
c. Observational studies have both independent and dependent variables.
d. Observational studies can be used to test hypothesis.
Explanation:
Observational studies are ones in which a researcher makes observations about his thoughts and views. He observes the risk and other effects before actual test takes place. This is usually the initial phase of research where observations are made for suitability of certain things that are to be researched. There is initial feasibility test conducted to identify whether the further research process is beneficial or not.
It could either be a hill, lake, waterfall, mountain or they just built a wall to divide themselves
<span>It
is 87%. 87% fatal are the crashes
created because of drowsy driving or falling asleep while driving. Falling asleep while driving, also known as
drowsy driving is one of the most major problem and major cause of car accident
in different parts of the world. According
to the National Sleep Foundation during 2005’s sleep in America poll, about 60%
of the adult drivers have tried driving a vehicle while feeling sleepy or
drowsy. This result is equivalent to
about 168 million people. In this poll
also, it was noted that one-third or 37% have actually fallen asleep while
driving, that equals to 103 million people.</span>
Are there multiple choices?
Which do you think would be the hardest pillar to fulfill.
<span>1.Shahadah - Declaration of faith </span>
<span>2.Salah - Prayer [5 prayers a day] </span>
<span>3.Zakah - Charity [Giving 2.5% to a charity] </span>
<span>4.Sawn - Fasting </span>
<span>5.Hajj - Pilgrimage. </span>
<span>For me it would be Hajj cause I don't like traveling. </span>
<span>Also in todays society and where I live , Salah would be pretty hard to follow as well. </span>
<span>I'm not posting this Q to waste time by the way.Its Homework for R.S</span>
