Answer:
If we define the random variable X ="time spend by the students doign homework"
And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:
Null hypothesis:
Alternative hypothesis:
And they wnat to use a sample size of n = 100 and a significance level of 0.05
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
If we define the random variable X ="time spend by the students doign homework"
And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:
Null hypothesis:
Alternative hypothesis:
And they wnat to use a sample size of n = 100 and a significance level of 0.05
Answer:
D
Step-by-step explanation:
2(a+3), a=3
2(3+3)
2(6)
<em><u>12</u></em>
A) 2(3)=5 (not equivalent)
B) 5(3)=15 (not equivalent)
C) 2(3)+3=9 (not equivalent)
<u><em>D) 2(3)+6=12</em></u><em> </em><u><em>(</em></u>equivalent)
There are ways to select 3 from 9.
There are ways to select 3 men from 5 men and ways to select 3 women from 4 women.
If all three selected are men, then no woman was selected, and we have
ways we can do that.
1)
2) If all 3 are women then no man was selected, and we have
ways we can do that.
3) If 2 men and 1 woman were selected, the we have ways we can do that.
4) If 2 women and 1 man is selected, then we have
Answer:
Step-by-step explanation:
(19+13)*14/2= 217 sq ft