The answer is D Explanation: since the the slope is negative the x should be negative and D is the only one that has a negative X.
Answer:
mean = 2.55
Standard deviation = 1.118
Step-by-step explanation:
Probability of babies who are boys
P = 0.51
Then we have q = 1-p
= 1-0.51
= 0.49
We have n = 5
We calculate the mean as:
np
= 0.51x5
= 2.55
Therefore mean = 2.55
The standard deviation
= √variance
= √npq
= √0.51x5x0.49
=√1.2495
= 1.118
Note: (2/3) yard= (2/3)(3 ft) = 2 feet
Ans: 2/6 = 1/3 foot
Each piece is 1/3 foot long
The answer to waht you are looking for is: x-y=-2
