Assume the random variable x is normally distributed with mean u = 90 and standard deviation o=5. Find the indicated probability.
P(X<80) =
(Round to four decimal places as needed.)

Given:

Let the random variable x is normally distributed with mean and

We need to determine the probability of

Probability of :

The formula to determine the value of is given by

Thus, we have;

Simplifying, we get;

Using the normal distribution table, the value of -2 is given by 0.0228

Thus, the value of is 0.0228

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

60

step-by-step explanation: