Answer:
x = 45
y = 37
z = 23
Step-by-step explanation:
x + y + z = 105
x = z + 22
x + 15 = y + z
(z + 22) + 15 = y + z
37 = y
x + y + z = 105
(z + 22) + 37 + z = 105
2z = 46
z = 23
x + y + z = 105
x + 37 + 23 = 105
x = 45
Answer:
500
Step-by-step explanation:
A = the unknown number that we need to find
A x 13/100 = 65
=> A x 13 = 6500
=> A = 6500 / 13
=> A = 500
13% of 500 is 65.
Let's check whether the answer is correct or not.
=> 500 x 13/100
=> 5 x 13
=> 65.
So, the number whose 13% is 65 is 500
Answer: 
Step-by-step explanation:
Given : The probability of a correct classification of any part is : p=0.96
sample size : n= 3
The formula to find the mean and variance for binomial distribution is given by :-

Let the random variable X denote the number of parts that are correctly classified.
The, for the given situation, we have

Hence, the mean and variance of X are 2.88 and 0.115 respectively.