Answer:
1. x<3
2. True
Step-by-step explanation:
1. 4x - 4 < 8
4x<8+4
4x<12
x<3
2. 92 +5 > 23
97>23
True
Answer:
151 students must be selected.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
That is z with a pvalue of , so Z = 1.96.
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
The population standard deviation is known to be $25.
This means that
How many students must be randomly selected to estimate the mean weekly earnings of students at one college? Sample mean within $4 of the population mean
This is n for which M = 4. So
Rounding up:
151 students must be selected.
Hey there!
3.14 is Pi but not irrational, as it is a terminating decimal and doesn't go on forever. As long as it terminates and can be expressed as a fraction, it's rational.
Hope this helps!
Answer:
In its 2008 decision in District of Columbia v. Heller, the Supreme Court held for the first time that the Second Amendment protects an individual right to bear arms.
Hope this helps :)