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What is a normal distribution

Assignment Help Basic Statistics
Reference no: EM131264335

Topics: Probability and Probability Distributions

Exercise 1 - Concepts and definitions.

(a) What is a normal distribution?

(b) What is its usefulness?

(c) What is the standard normal distribution?

(d) What is it usefulness?

Exercise 2 - The lifetime of light bulbs is known to be normally distribution with μ = 100 h and σ = 8h. What is the probability that a bulb picked at random will have a lifetime between 110 and 120 burning hours?

Example 1- Let's keep μ = 10 and generate two curves, one with σ = 2, and another with σ = 1, the normal functions have the following shapes:

1354_Figure.png

The area under the curve for each normal distribution, f(x) and g(x) in the figure here above, is of course equal to 1.

Reference no: EM131264335

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len1264335

11/3/2016 3:49:16 AM

Clearly write the solution (not only the answer!) below each Topics: Probability and Probability Distributions. There are only 3 short exercises to solve. It is stated the questions in the word document with instructions. The questions are found in the PDF pages 10-15.

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