-12, 2 when you multiply -12x2= -24 but if you add them it’d be -10
Answer: a) 0.1587 b) 0.0618
Step-by-step explanation:
Let x be the random variable that represents the monthly demand for a product.
Given : The monthly demand for a product is normally distributed with mean = 700 and standard deviation = 200.
i.e. and
a) Using formula , the z-value corresponds to x= 900 will be :
Now, by using the standard normal z-table , the probability demand will exceed 900 units in a month :-
Hence, the probability demand will exceed 900 units in a month=0.1587
a) Using formula , the z-value corresponds to x= 392 will be :
Now, by using the standard normal z-table , the probability demand will be less than 392 units in a month :-
Hence, the probability demand will be less than 392 units in a month = 0.0618
Answer:
A
Step-by-step explanation:
Answer:
7 cm
Step-by-step explanation:
Let the side of square be x.
Perimeter of square = 4x
Diameter of circle = x
Radius of circle = x/2
Circumference of circle = 2 * 22/7 * x/2 = 22/7x
According to Question,
4x + 22/7x = 100
(28+22) / 7x = 100
50x = 700
x = 14
Hence, diameter of circle = 14 cm
Radius of circle = (14/2) cm = 7 cm