The life expectancy of computer terminals is normally distributed with a mean of 4 years and a standard deviation of 1 year. Wha
t is the probability that a terminal will last 5 years or less?
1 answer:
Answer:
The probability that a terminal will last 5 years or less is 0.8413
Step-by-step explanation:
Given:
μ= 4 years
σ= 1 year
Z=(x-μ)÷σ
Z=(5-4)÷1 = 1
The standard normal distribution table provides the probability that a normally distributed random variable Z, with mean equal to 0 and variance equal to 1, is less than or equal to z.
For z= 1 ⇒ P(z≤1)=0.8413
You might be interested in
The smallest number of tiles Quintin will need in order to tile his floor is 20
The given parameters;
- number of different shapes of tiles available = 3
- number of each shape = 5
- area of each square shape tiles, A = 2000 cm²
- length of the floor, L = 10 m = 1000 cm
- width of the floor, W = 6 m = 600 cm
To find:
- the smallest number of tiles Quintin will need in order to tile his floor
Among the three different shapes available, total area of one is calculated as;
Area of the floor is calculated as;
The maximum number tiles needed (this will be possible if only one shape type is used)
When all the three different shape types are used we can get the smallest number of tiles needed.
The minimum or smallest number of tiles needed (this will be possible if all the 3 different shapes are used)
Thus, the smallest number of tiles Quintin will need in order to tile his floor is 20
Learn more here: brainly.com/question/13877427