Which number is greatest? A.6.23*10^12 B.6.23*10^8 C.6.23*10^-6 D.6.23*10^3
2 answers:
For this case, they ask us which of the given numbers, in scientific notation, is greater.
So:
is equivalent to rolling the decimal 12 times to the right.
is equivalent to rolling the decimal 8 times to the right.
is equivalent to rolling the decimal 6 times to the left.
is equivalent to rolling the decimal 3 times to the right.
Thus, we observe that the greatest number is
Answer:
Option A
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Answer:
For this case we want to test if there is a higher incidence of smoking among women than among men in a neighborhood (alternative hypothesis). And we define p1 for men and p2 for women, so for this case the best system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
And the best option would be:
a) h0: p1-p2 ≥ 0 h1: p1-p2 < 0
Step-by-step explanation:
Previous concepts
A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".
The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".
The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".
Solution to the problem
For this case we want to test if there is a higher incidence of smoking among women than among men in a neighborhood (alternative hypothesis). And we define p1 for men and p2 for women, so for this case the best system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
And the best option would be:
a) h0: p1-p2 ≥ 0 h1: p1-p2 < 0