Answer: 2.5
Step-by-step explanation:
Let be the population mean .
Then, Null hypothesis :
Alternative hypothesis :
We assume that this is a normal distribution.
Given : Sample size : n=25 , since the sample is small (n<30) so we cannot apply z-test . Thus the test is t-test.
Sample mean :
Population standard deviation :
The test statistic for population mean is given by :-
i.e.
Hence, the observed critical value = 2.5
|-3| > -|3|
Note that when a number is in absolute absolute values, the number will always be positive.
> is your answer
hope this helps
Answer:
150 cm2
Step-by-step explanation:
one square would simply be base x height our base is 5 and height is 5 so i multiply that and get 25 since this is a cube all sides are equal so I will simply just multiply 25 by the number of sides since a cube has 6 sides our equation to get the answer would be 25 x 6 = 150 so 150 is our answer! Hope this is a good explanation! Have a good day!
Y=mx+b
m=slope
so it is y=-4/3x+b
d is answer