Answer:
The first choice
Step-by-step explanation:
The choice of "The P-value for a test of the null hypothesis of equal means and the alternative of different means would be greater than 10% because the interval doesn't include 0" is the correct choice because the lower bound of the confidence interval is 0.2.
Since we are looking at an interval based on the difference of heights, we are 95% sure the lowest difference is 0.2, or 20%. Choosing 10% as a test value for a hypothesis test is a good value to choose since it's lower than the lowest bound of the confidence interval
Answer:
Commutative
Step-by-step explanation:
You can switch the order.
Answer:
-7x^3 + 5ax - 3 + 7x^3 + 5 - 9ax
-4ax + 2
answer is c
Step-by-step explanation:
4/9 *9/4 =1
Use the reciprocal to find your answer :)
Cheers :3
Answer:
4 goats
Step-by-step explanation:
Let us represent
Number of quails = x
Number of goats = y
Quails have 2 legs
Goats have 4 legs
Hence:
There are 6 animals in the pen some are quails and some are goats
x + y = 6...... Equation 1
x = 6 - y
if there are 20 legs in all how many quails
2x + 4y = 20..... Equation 2
We substitute 6 - y for x in Equation 2
2(6 - y) + 4y = 20
12 - 2y + 4y = 20
Collect like terms
- 2y + 4y = 20 - 12
2y = 8
y = 8/2
y = 4 goats
The number of goats there are 4 goats
