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
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Answer:
The rate of interest for compounded daily is 2.1 6
Step-by-step explanation:
Given as :
The principal investment = $ 98,000
The Time period for investment = 7 years
Let The rate of interest compounded daily = R %
The Amount at the end up = $ 114,000
<u>From compounded method</u>
Amount = Principal ×
Or, $ 114,000 = $ 98,000 ×
Or, =
or, 1.16326 =
or, = 1 +
1.00005919 - 1 =
or, 0.00005919 =
∴ R = 0.00005919 × 365000 = 2.16
Hence the rate of interest for compounded daily is 2.1 6 Answer