Answer:
t = 3.016
P-value = 0.0061
Step-by-step explanation:
Let us assume that the population variance is unequal
Null hypothesis :
μ = μ
μ ≠ μ
The alternative hypothesis :
Here we have
Since it is not given that variances are equal, degrees of freedom of the test is given as
The P-value of the test is = 0.0061
Since the p-value is less than 0.05, we will reject the null hypothesis
A number is rational if it can be written in form a/b where a and b are integers and b is not equal to 0
integers are like -4,-3,-2,-1,0,1,2,3,4, etc
so
√20=2√5 which is irrational because we can't write it as a fraciton with only integers
also a rational number multilied by an irratinonal number=irrtaional
we know that the square root of any prime number will be irrational and 5 is prime so 2 times √5=rational times irrational=irrational
√20 is irrational
Answer:
i don't know but if it we're me i'd pick the answer i think it is good luck though
Step-by-step explanation:
For 36 3 6 13. For 48 4 8 24. I think there are more but I can't think of them
Answer:
area of 3rd figure is 20ft^2
and perimeter is 20 ft