Given that a random variable X is normally distributed with a mean of 2 and a variance of 4, find the value of x such that P(X < x)=0.99 using the cumulative standard normal distribution table
Answer:
6.642
Step-by-step explanation:
Given that mean = 2
standard deviation = 2
Let X be the random Variable
Then X
N(n,
)
X
N(2,2)
By Central limit theorem;


P(X<x) = 0.09


P(X < x) = 0.99





X -2 = 2.321 × 2
X -2 = 4.642
X = 4.642 +2
X = 6.642
I need help with how to do this question the way .
multiply the 2 numbers together
100 x 13.145 = $1,314.50
Answer:2/8
Step-by-step explanation:
do top and bottom multiply
Answer:
Step-by-step explanation:
Surface area = lateral area + 2(area of base)
Lateral area = perimeter of base * height.
Because it is a isosceles right triangle, both sides are equal.
= 72
2
= 72. Divide both sides by 2
= 36. Square both sides.
x = 6.
So the perimeter of the base = 6 + 6 +
= 20.485281374239
Lateral area = 20.485281374239 * 7 = 143.397 
Area of base is (1/2)base * height.
(1/2)(6)(6) = 18
Using the surface area formula
surface area = 143.397 + 2(18) = 179.4 