Answer:
P(X > 112) = 0.21186.
Step-by-step explanation:
We are given that the random variable X is normally distributed, with mean 
= 100 and standard deviation 
= 15.
Let X = <u><em>a random variable</em></u>
The z-score probability distribution for the normal distribution is given by;
Z = 
~ N(0,1)
where, = population mean = 100
= standard deviaton = 15
Now, the probability that the random variable X is greater than 112 is given by = P(X > 112)
P(X > 112) = P( > 
) = P(Z > 0.80) = 1- P(Z 
0.80)
= 1 - 0.78814 = <u>0.21186</u>
The above probability is calculated by looking at the value of x = 0.80 in the z table which has an area of 0.78814.
Answer:
f(5) = 100
f(25) = 500
f(60) = 1200
Step-by-step explanation:
All you had to do was pulug in the f(x) into the x.
F(5) = 20 (5) = 100
f(25) = 20(25) = 500
f(60) = 20(60) = 1200
PLZ MARK ME BRAINLIEST!!!!
Answer:
The first one $1.42
Step-by-step explanation:
1.42x5=7.1 (cost of all envelopes)
12-7.1=4.9
4.9/14=0.35 (one postcard)
10 postcards= 3.5
1.42x15=21.3 (cost of all envelopes)
3.5+21.3=$24.80
Answer: There is one valid solution to the equation 5x + 8 - 7x = -4x + 1, x = -3.5.
Step-by-step explanation:
L is 0 because it cancels itself out
