How are we supposed to answer this? there's no question... o_o
A, expect the second term (2xy) should be just 2y
Answer with explanation:
Given : The heights of a certain population of corn plants follow a normal distribution with mean
and standard deviation 
a) Using formula
, the z-value corresponds to x= 135 will be

At x= 155, 
The probability that plants are between 135 and 155 cm tall :-

Hence, 34.73% of the plants are between 135 and 155 cm tall.
b) Sample size : n= 16
Using formula
, the z-value corresponds to x= 135 will be

At x= 155, 
The probability that plants are between 135 and 155 cm tall :-

Hence,The percentage of the samples would the sample mean height be between 135 and 155 cm.= 93.12%
P(selecting a 10)= 4/52
P(selecting a 2)= 4/52
P(selecting a 4)=4/52
P(selecting an Ace)=4/52
P(selecting a diamond)=13/52
Answer:
(4,5).
Step-by-step explanation:
The solution to a system of equations that is graphed is when the two lines intersect. They intersect at (4,5), so the solution to the system is (4,5). Hope this helps!